Faculty Profiles - KHAJORNRUNGRUANG, Panart

Observation of Moving Nano-Particles in the Vicinity of a Substrate Wall Using Near Field Light (Evanescent Field) Invited Reviewed

KHAJORNRUNGRUANG Panart

Journal of the Japan Society for Precision Engineering ( The Japan Society for Precision Engineering ) 90 ( 2 ) 184 - 188 2024.02

Verification of nano-particle absolute height position measurement from a surface with invisible reference tilt resin by multi-wavelength evanescent fields Invited Reviewed International journal

GOTO Daiki, KHAJORNRUNGRUANG Panart, BLATTLER Aran, TERAYAMA Yutaka, OHTA Yuki

Journal of Advanced Mechanical Design, Systems, and Manufacturing ( The Japan Society of Mechanical Engineers ) 18 ( 4 ) JAMDSM0049 - JAMDSM0049 2024.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

Some nanoscale technologies are being employed without a full understanding of the underlying phenomena. Both static and dynamic observations of nanoparticles are essential for investigating these phenomena. While there are several methods for static observation such as scanning electron microscopy typically in a vacuum environment, however, there are few methods for dynamic observation. One of the dynamic observation methods is to observe nanoparticles using an evanescent field, a unique field that emerges only near the surface being observed. The dynamic observation method has been proposed for measuring the three-dimensional positions of moving nano-particles in liquid using a multi-wavelength evanescent field. However, the absolute height of the nano-particles remains unexplored in this study. Hence, to establish this method, it is necessary to confirm the absolute distance or the height from the surface being observed at the same position by other reference measurement methods. In this paper, an optical resin with a refractive index close to the water was formed as an invisible reference tilt surface that was thinner than 200 nm in height. We also constructed a compact interferometric optical system to utilize optical interferometry that can measure the height of the tilt resin without contact and with nanoscale accuracy. Polystyrene standard nano-particles suspended in water were deposited onto the water-invisible tilt resin and was measured the height at each position on the tilt resin by a multi-wavelength evanescent field. As a result, it was confirmed that the 3D position measurement of particles using multi-wavelength evanescent fields tends to follow the resin surface height well. At the heights under approximately 100 nm, the differences in height were less than 5 nm between multi-wavelength evanescent fields and interferometry measurement, and the precision (2σ) also was approximately 5 nm.

DOI： 10.1299/jamdsm.2024jamdsm0049

Other Link： https://www.jstage.jst.go.jp/article/jamdsm/18/4/18_2024jamdsm0049/_pdf

Study on a Novel Peeling of Nano-Particle (PNP) Process for Localized Material Removal on a 4H-SiC Surface by Controllable Magnetic Field Invited Reviewed International journal

Permpatdechakul Thitipat, Khajornrungruang Panart, Suzuki Keisuke, Kutomi Shotaro

International Journal of Automation Technology ( Fuji Technology Press Ltd. ) 17 ( 4 ) 410 - 421 2023.07

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

This study proposes a novel process called peeling of nano-particle (PNP) to remove material locally on a hard material surface, such as silicon carbide (SiC), diamond, and gallium nitride (GaN), using the magnetic nano-particles in an aqueous solution controlled by magnetic fields. By the concept of the PNP process, magnetic fields are generated by two solenoid coils, which are sandwiched between the hard material sample, to pull the magnetic nano-particles to adhere to and then peel the material from the sample surface. In this experiment, iron (II, III) oxide (Fe3O4) particles with a diameter size in the range of 50–100 nm were dispersed in water, and the pH value was adjusted to 10 by potassium hydroxide (KOH). The particles were magnetically controlled on the silicon carbide (4H-SiC) surface by the magnetic fields at approximately 17 mT. To confirm the contact phenomenon of the Fe3O4 particles on the 4H-SiC surface during the PNP process, an optical system was developed by applying evanescent field microscopy to limit the observation range to approximately 300 nm from the 4H-SiC surface. According to the experimental observed results, the control phenomenon of two examples of Fe3O4 particles could be observed through their scattering light, which relates to the magnetic field generating sequence wherein the particles were magnetically pulled in and out of the 4H-SiC surface in the limit range of the evanescent field. During the particle pull to the surface, particles were able to be tracked in the X–Y directions during the approach to the 4H-SiC surface. The Brownian motion ranges in all directions of the particles decreased when the particles approached close to the surface due to the pulling magnetic field. Moreover, the magnetic field enforced the magnetic moment of the particle and limited their rotation.

DOI： 10.20965/ijat.2023.p0410

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85164951255&origin=inward

Study on action forces on nano-particle to flat surface using localized remote magnetic field

Permpatdechakul Thitipat, Khajornrungruang Panart, Suzuki Keisuke, Goto Daiki

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2023S ( 0 ) 384 - 385 2023.03

Authorship：Corresponding author Language：English Publishing type：Research paper (other academic)

By peeling of nano-particle (PNP) process, the magnetic nano-particles in an aqueous solution are employed to be locally magnetically controlled for adhering to a substrate surface and removing the material. In order to remove the material on the surface, the touching phenomenon of particle on surface needs to be confirmed. In this study, the touching phenomenon of nano-particle on the substrate surface was experimentally observed in situ the PNP process by our developed optical system applying multi-wavelength evanescent fields. The action forces, such as DLVO force and magnetic force, on the particle were measured by the height Z of the particle from the substrate surface. Fe3O4 particles with the sized range 50-100nm dispersed in the KOH solution (pH value of 10) were employed to be magnetically pulled to approach a silica glass surface by the controllable magnetic field generated by a solenoid coil. During the magnetic field generating, the height Z of nano-particle were measured at the closest approximately 10 nm, in which the DLVO force at measured height Z approximately 0.5-0.9 pN by calculation. To pull the particle touch on the glass surface, the pulling magnetic force on the particle size in range 50-100 nm should be higher than 1 pN approximately.

DOI： 10.11522/pscjspe.2023s.0_384

Real Time Nanoscale Observation in Cleaning Phenomena by Evanescent Field

Terayama Yutaka, Khajornrungruang Panart, Suzuki Keisuke, Mori Ryotaro, Hamada Satomi, Wada Yutaka, Hiyama Hirokuni

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2022S ( 0 ) 126 - 126 2022.03

Study on On-Machine Visualization of Surface Processing Phenomena in Nanoscale:the apparatus development

Khajornrungruang Panart, Shirakawa Hiroaki, Suzuki Keisuke, Sakai Koya

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2016S ( 0 ) 5 - 6 2016.01

Superconductive Assisted Machining with Superconducting Tape for Polishing Reviewed International journal

Yamamoto Soma, Nakato Ayumi, Khajornrungruang Panart, Otabe Edmund Soji, Suzuki Keisuke

International Journal of Automation Technology ( Fuji Technology Press Ltd. ) 19 ( 6 ) 1095 - 1102 2025.11

Language：English Publishing type：Research paper (scientific journal)

Superconductive-assisted machining (SUAM) is a polishing method that applies the magnetic flux-pinning phenomenon of a superconductor to a magnet tool with a polishing pad, thereby reducing tool interference. SUAM methods utilize two types of devices: a single magnet system and a double magnet system (DMS). The DMS increases the magnetic flux density by placing the lower magnet under the superconductor, resulting in higher polishing pressure. In our previous study, we used a superconducting ceramics bulk in a conventional SUAM system. In this study, superconducting tapes were combined with the superconducting ceramics bulk to increase the holding force of the SUAM system. Four types of superconductors using superconducting ceramics bulk and tape were evaluated using SMS to determine their structure as a function of magnet tool position. The maximum holding force was obtained when the superconductor was combined with the ceramics bulk and superconducting tape. The holding force was measured by varying the initial position of the lower surface magnet in the DMS. When the bottom magnet was placed 4 mm from the superconductor, the attractive force was 1.6 times greater than at a 20 mm distance. The polishing performance of aluminum in SUMA was evaluated using superconducting ceramics bulk and tape. A superconducting tape can accommodate greater polishing pressure, resulting in higher polishing efficiency. After polishing, a surface roughness of Sa<0.1 µm was obtained with reduced polishing pressure.

DOI： 10.20965/ijat.2025.p1095

Direct Observation of Sub-100 nm Silica Particle Detachment: Lateral Force and Evanescent Microscope Study Reviewed International journal

Terayama Y., Khajornrungruang P., Seo J., Hamada S., Wada Y., Hiyama H.

Ecs Journal of Solid State Science and Technology 14 ( 4 ) 2025.04

Real Time Nanoscale Observation in Cleaning Phenomena by Evanescent Field

Arima Yu, Khajornrungruang Panart, Kuroe Norita, Nishi Tomoya, Urushihara Natsuko, Wada Yutaka, Hiyama Hirokuni

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2025S ( 0 ) 203 - 204 2025.03

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

Effectively preventing the reattachment of nano-particles on the substrate surface is indispensable in the wafer cleaning process. In this paper, we attempted to track the three-dimensional behavior of sub-100 nm particles in shear flow and elucidate the reattachment phenomenon by using a combined observation method that uses evanescent light field and dark field observation methods in the same field of view and extends the measurement of particle height position from the observed surface from several hundred nm to several um.

DOI： 10.11522/pscjspe.2025s.0_203

Experimental Investigation of Fluid Pressure Measurement on the polished surface by Optically Total Internal Reflection Intensity from Tiny Roughness

Ohta Yuuki, Khajornrungruang Panart, Ouchida Shuka, Ogata Koki

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2025S ( 0 ) 126 - 127 2025.03

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

Nanoscale phenomena such as attached and/or detached nano-objects and/or surface damage caused by fluid pressure waves (density changes) generated near the polished surface. However, pressure waves near the surface are not measured and the mechanism is not clear. In this article, we experimentally considered a method to measure the refractive index near the surface using decreased of optically internal reflection intensity due to the tiny surface roughness, which would change with fluid density.

DOI： 10.11522/pscjspe.2025s.0_126

Identification of Nano-bubbles from Nano-particles in Fluid Field by optical observation

Fujishima Hibiki, Khajornrungruang Panart, Ohta Yuuki, Tajima Yoshito

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2025S ( 0 ) 565 - 565 2025.03

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

In recent years, nano-bubbles have been utilized across various fields, with their effectiveness actively explored. However, there are few examples of microscopic studies, and the effects of nano-bubbles are unknown. Distinguishing between nano-bubbles and nano-particles is essential for understanding nano-bubble behavior when they mixed. Therefore, we observed the behavior of nano-bubbles and nano-particles in liquids using dark-field microscopy, focusing on their identification. In this paper, we verify that the rapid fluctuations in scattered light intensity of nano-bubbles are caused by their deformation.

DOI： 10.11522/pscjspe.2025s.0_565

Study on action forces on nano-particle to flat surface using localized remote magnetic field

Tajima Yoshito, Khajornrungruang Panart, Fujishima Hibiki

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2025S ( 0 ) 131 - 132 2025.03

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

In wet processes such as polishing or cleaning, extremely small interaction forces act between nano-abrasive particles and the substrate surface. Understanding these interaction forces enables efficient determination of conditions for high-precision processing. In this article, we enhanced magnetic force using multiple twisted coils for measuring interaction forces at closer proximities to the surface and compared the results with those obtained using a single coil under identical applied current conditions. It was suggested that the enhanced attraction allowed the particles to approach the substrate surface more closely, enabling the measurement of interaction forces in cases of ultra-close nano-abrasive particles.

DOI： 10.11522/pscjspe.2025s.0_131

Spectral Characteristic Verification of Multi-wavelength Evanescent Light Optical Systems set up with Pellin-Broca Prism

Ouchida Shuka, Khajornrungruang Panart, Yamagata Ryunosuke

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2025S ( 0 ) 558 - 558 2025.03

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

The conventional optical systems have the limitation for using the multi-wavelengths due to a large systems, in which the dichroic mirrors and cameras are employed. We have been developing a multi-wavelength evanescent optical systems by using a prism to spectralize wavelengths. Moreover, not only the input wavelengths, but also the other wavelengths were able to be observed such as fluorescence light. In this paper, we estimated the wavelength of fluorescence by fluorescent particles and verified measured the wavelength by the developed optical system.

DOI： 10.11522/pscjspe.2025s.0_558

Measurement Accuracy of Tool Edge Position in Evanescent Light Fields on Soft Matter Surfaces

Ogata Koki, Khajornrungruang Panart, Terayama Yutaka, Ohta Yuuki

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2025S ( 0 ) 70 - 71 2025.03

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

Methods for measuring approach distances of the microtool edge in evanescent light field on solid material surfaces such as glass and SiC has been established. However, it is necessary to bring the tool edge to several hundred nm from the surface, so tool edges and substrates may be broken because of touching. Accordingly, in order to examine the practicality of evanescent light on soft matter surfaces, we report on evaluating the measurement accuracy of the distance between the silicone surface and the tool edge height-controlled by piezoelectric element in this article.

DOI： 10.11522/pscjspe.2025s.0_70

Attempt of Sustained Nano-Particle Agglomeration Analysis by Simulation

Yamagata Ryunosuke, Khajornrungruang Panart, Ouchida Shuka

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2025S ( 0 ) 202 - 202 2025.03

Mathematical Modeling of Material Removal Rate in Sapphire CMP using Silica Particle Reviewed International journal

Bun-Athuek N., Khajornrungruang P., Suzuki K., Saivaew N.

Proceedings of the World Congress on Mechanical Chemical and Material Engineering 2025.01

水酸化フラーレンを用いたSiCウェハの高効率研磨に関する研究

森井将希, 鈴木恵友, 西澤秀明, カチョーンルンルアンパナート, 判谷太輔

精密工学会学術講演会講演論文集 ( 公益社団法人精密工学会 ) 2024S ( 0 ) 682 - 683 2024.02

Language：Japanese Publishing type：Research paper (other academic)

SiCは高性能パワー半導体材料として期待されているが、高硬度かつ化学的に安定なため加工が困難である．コロイダルシリカを用いたSiC-CMPには多くの時間を要する．一方，ダイヤモンド砥粒を用いることで高効率な研磨が可能だが，基板表面に多くの欠陥や転移を発生させてしまう．本研究では水酸化フラーレンを用いてシリカとダイヤモンドの効果を高め，高効率研磨と平滑面の両立を試みたので，その結果を報告する．

DOI： 10.11522/pscjspe.2024s.0_682

Real Time Nanoparticle Observation in Cleaning Phenomena by Evanescent Field

Kuroe Norita, Khajornrungruang Panart, Arima Yu, Hamada Satomi, Wada Yutaka, Hiyama Hirokuni

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2024S ( 0 ) 688 - 689 2024.02

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

Preventing the re-deposition of nano-particles on the substrate surface is essential in wafer cleaning. Although 3D measurement of the behavior of nano-particles that have been detached and moved by shear flow generated in the extreme vicinity of the surface (moving position) has been performed, it is necessary to use this method in combination with the dark-field observation method, which was limited to observation of suspended particles in very close proximity with surface-localized light. In this paper, we report on our attempt to utilize defocusing using cylindrical lenses to obtain sufficient longitudinal resolution for shallow and deep position measurement of moving particles.

DOI： 10.11522/pscjspe.2024s.0_688

Spectral Characteristic Verification of Multi-wavelength Evanescent Light Optical System set up with Pellin-Broca Prism Reviewed

Ouchida Shuka, Goto Daiki, Khajornrungruang Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2024S ( 0 ) 329 - 330 2024.02

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

Although it is possible to measure the height of nano-particles near the surface using multi-wavelength evanescent light optical system, conventional optical system can only observe two wavelengths using such as dichroic mirrors. Using an optical system that is not limited to the number of wave-length or certain wavelength, has the advantage of being able to measure height with higher accuracy. In this paper, we propose spectroscopic method of multi-wavelength evanescent light using a Pellin-Broca prism and verify the spectral performance of the prism. This turns out to be approximately 0.25 nm/pixel.

DOI： 10.11522/pscjspe.2024s.0_329

Study on action forces on nano-particle to flat surface using localized remote magnetic field

Mizutani Kyo, Permpatdechakul Thitipat, Goto Daiki, Khajornrungruang Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2024S ( 0 ) 231 - 232 2024.02

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

Although magnetic nanoparticles are currently used as a method for precision polishing, localized processing is difficult due to the possible lack of control over magnetic nanoparticles. Therefore, in this study, the relationship between magnetic flux density and force was investigated by comparing the magnitude of magnetic force required for nanoparticles to attach to the substrate surface by simulation and experiment using a solenoid coil for localized control of magnetic nanoparticles.

DOI： 10.11522/pscjspe.2024s.0_231

Study on Measurement of Sub-100 nm Particles on Micro-Porous Surfaces by Optical Interferometry

Kutomi Shotaro, Kuroe Norita, Khajornrungruang Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2024S ( 0 ) 327 - 328 2024.02

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

The nano-particles on micro-porous surfaces neighboring edges, and on an inside of the pores are difficult to be observed by dark-field microscopy. Because the nano-particles neighboring porous edges scattering light are covered up by considerably high scattering light from their edges. An inclined dark field illumination light is not also able to reach inside pores in wide regions to scatter the light from the nano-particle inside their micro-sized pores. Therefore, we have attempted to observe nano-particles adhered on inside micro porous surfaces by an optical interference. In this paper, we report the detection results of silica nano- particles on the inside of micro-porous surfaces by detecting and evaluating nano-particles on an inclined substrate surface regarded as an inside of porous surface.

DOI： 10.11522/pscjspe.2024s.0_327

Research on polished particles of novel carbon allotropes using fullerenes (2nd report)

Takeiri Junpei, Suzuki Keisuke, Iura Hiroaki, Hantani Taisuke, Morii Masaki, Nishizawa Hideaki, KHAJORNRUNGRUANG Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2024S ( 0 ) 555 - 556 2024.02

Language：Japanese Publishing type：Research paper (other academic)

For the purpose of high efficiency polishing of diamond substrates, which are hard and fragile materials, we have developed fullerene C60 composite polishing fine particles. As a result of applying the developed fine particles to the polishing of the diamond substrate, it was confirmed that the material removal rate was improved and the surface roughness of the polished surface was reduced. In addition, a carbon allotrope different from fullerene C60 was confirmed in the process of making fine particles. In this talk, we will report on the outline of the developed fine particles and the polishing results.

DOI： 10.11522/pscjspe.2024s.0_555

Experimental In-Situ Observatory on Brownian Motion Behavior of 105 nm Sized Silica Particles During Chemical Mechanical Polishing of 4H-SiC by an Evanescent Field Reviewed International journal

Permpatdechakul Thitipat, Khajornrungruang Panart, Suzuki Keisuke, Blattler Aran, Inthiam Jiraphan

International Journal of Automation Technology ( Fuji Technology Press Ltd. ) 18 ( 1 ) 47 - 57 2024.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

The experimentally observing optical systems for on-machine measurement have been developed to study on nano-polishing phenomena during the chemical mechanical polishing process, which is a wet process in semiconductor manufacturing. The developed optical system employs an evanescent field to selectively enhance exclusively the observatory of phenomena occurring on the surface being polished, offering a lateral resolving power of approximately 400 nm, in the slurry concentration of up to 5 wt% based on the numerical aperture of the objective lens. In addition, there is also the observability of 105 nm and down to 55 nm-sized silica particles without requiring additive fluorescence agents in or around the nano-particles, even when these particles are moving on surfaces such as silica glass or hard materials (silicon carbide: 4H-SiC). Consequently, the motion behavior of nano-particles disjoining with polishing pad asperity was explored and discussed, in this paper. Experimental results revealed that the polishing pad spatially constrains the movement of particles between the pad and the substrate surface, guiding them toward the surface being polished. During pad sliding, fluidically dragged nano-particles exhibit slower movement than the polishing pad sliding speed while retaining the Brownian motion. Furthermore, 105 nm-sized silica particles did not continuously approach to attach onto the SiC surface; the nano-particles approached in steps with reduced Brownian motion in all directions before attaching. This behavior can be attributed to the effects of van der Waals attraction and electrostatic repulsion forces between the particle and the substrate surfaces.

DOI： 10.20965/ijat.2024.p0047

Other Link： https://ndlsearch.ndl.go.jp/books/R000000004-I033252388

Optical Evanescent Field for Direct Observation of Sub-100nm Particle Motion on Glass Surface Invited Reviewed International journal

Khajornrungruang P., Permpatdechakul T., Suzuki K., Blattler A., Terayama Y., Goto D., Phaisalpanumas P., Bun-Athuek N., Phunopas A.

2024 1st International Conference on Robotics, Engineering, Science, and Technology, RESTCON 2024 50 - 54 2024.01

Study on sonic-Assisted processing method for micro pattern formation on Cu film Reviewed International journal

Yamamoto S., Fukushige Y., Nishizawa H., Khajornrungruang P., Suzuki K.

2024 1st International Conference on Robotics, Engineering, Science, and Technology, RESTCON 2024 55 - 58 2024.01

Study on Direct Optical Observation Method of sub-100 nm Gold Particle Motion after Detaching from a Surface being Cleaned

KHAJORNRUNGRUANG Panart, ARIMA Yu, KUROE Norita, HAMADA Satomi, NISHI Tomoya, WADA Yutaka, HIYAMA Hirokuni

The Proceedings of Conference of Kanto Branch ( The Japan Society of Mechanical Engineers ) 2024.30 ( 0 ) 14C11 2024.01

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (other academic)

In this paper, we report the establishment of a method that utilizes the astigmatism aberration in only dark-field optical microscopy in combined with total internal reflection microscopy. This method enables the continuous observation of the behavior of nano-particles after departing from the evanescent light field, until approximately 2 μm range far from the silica surface.

DOI： 10.1299/jsmekanto.2024.30.14c11

Other Link： https://www.jstage.jst.go.jp/article/jsmekanto/2024.30/0/2024.30_14C11/_pdf

フラーレンを用いた新規炭素同素体の研磨微粒子に関する研究

鈴木恵友, 井浦寛陽, 竹入淳平, 判谷大輔, 森井将希, 西澤秀明, パナートカチョーンルンルアン

精密工学会学術講演会講演論文集 ( 公益社団法人精密工学会 ) 2023A ( 0 ) 410 - 411 2023.08

Language：Japanese Publishing type：Research paper (other academic)

C60トルエン溶液にダイヤモンド粉末を混合させ紫外線照射を行った。その粒子を水分散したスラリーでダイヤモンド基板を研磨したところ、研磨レートと表面粗さの向上が確認出来た。また、その粒子をTEMで観察したところ、ダイヤモンド表面にC60とは異なる炭素同素体が生成されていることが確認された。

DOI： 10.11522/pscjspe.2023a.0_410

フラーレン構造体を用いた新規研磨微粒子に関する研究

轟木裕太, 森井将希, 判谷太輔, 鈴木恵友, 西澤秀明, Khajornrungruang Panart, 井浦寛陽

精密工学会学術講演会講演論文集 ( 公益社団法人精密工学会 ) 2023S ( 0 ) 788 - 789 2023.03

Language：Japanese Publishing type：Research paper (other academic)

SiC研磨における新規研磨微粒子の開発を行った。ナノシリカ微粒子上に水酸化フラーレンを吸着させた水酸化フラーレンハイブリッド型高速研磨技術について提案する。ここでは紫外線イオンによるポリマー化の影響についても検討している。

DOI： 10.11522/pscjspe.2023s.0_788

ダイヤフラムを用いた音波援用加工法に関する研究

山本颯真, 西澤秀明, カチョーンルンルアンパナート, 鈴木恵友

精密工学会学術講演会講演論文集 ( 公益社団法人精密工学会 ) 2023S ( 0 ) 794 - 795 2023.03

Language：Japanese Publishing type：Research paper (other academic)

本研究では、加振器による音波を用いてダイヤフラムとダイヤフラム上の研磨砥粒を振動させることにより、被加工物表面にダイヤフラム上の微細パターンを転写する新規音波加工技術を提案する。現在までに転写性を確認するため、絹パッドを貼付したダイヤフラムを加振させることで、Cuウェーハに絹パッドのパターンが転写することを確認した.

DOI： 10.11522/pscjspe.2023s.0_794

Observation of fluid field near surface region using Schlieren visualization in evanescent field

Ohta Yuki, Permpatdechakul Thitipat, Goto Daiki, Khajornrungruang Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2023S ( 0 ) 400 - 401 2023.03

Identification of Nano-bubbles from Nano-particles in Fluid Field by Optical Observation

Fujishima Hibiki, Kutomi Shotaro, Goto Daiki, Terayama Yutaka, Khajornrungruang Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2023S ( 0 ) 422 - 423 2023.03

Study on Measurement of Sub-100 nm Particles on Micro-Porous Surfaces by Optical Interferometry

Kutomi Shotaro, Khajornrungruang Panart, Goto Daiki, Ohta Yuki

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2023S ( 0 ) 424 - 425 2023.03

Study on On-Machine Visualization of Surface Processing Phenomena in Nanoscale

Goto Daiki, Khajornrungruang Panart, Blattler Aran, Permpatdechakul Thitipat, Ohta Yuki

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2023S ( 0 ) 374 - 375 2023.03

Real Time Nanoscale Observation in Cleaning Phenomena by Evanescent Field

Arima Yu, Fujishima Hibiki, Terayama Yutaka, Khajornrungruang Panart, Hamada Satomi, Wada Yutaka, Hiyama Hirokuni

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2023S ( 0 ) 786 - 787 2023.03

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

Preventing the reattachment of nano-particles on the substrate surface is indispensable in the wafer cleaning process. In this paper, transportability of different sized nano-particles were observed, in the shear flow occurring near the surface region that duplicated cleaning process in lab-scale, by using the evanescent field. Sub-100 nm particles affected less flow effect and smaller inertia were less likely to be transported. In case of low speeds of inertial flow, most sub-100 nm particles still remain near the surface.

DOI： 10.11522/pscjspe.2023s.0_786

Study on Visualization of Cleaning Phenomena in Nano-scale by Evanescent Field

TERAYAMA Yutaka, KHAJORNRUNGRUANG Panart, SUZUKI Keisuke, FUJISHIMA Hibiki, HAMADA Satomi, WADA Yutaka, HIYAMA Hirokuni

The Proceedings of Conference of Kanto Branch ( The Japan Society of Mechanical Engineers ) 2023.29 ( 0 ) 17D08 2023.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

We report the instantaneous physical evidence of detachment of residual φ80 nm Au particle due to the cavitation effect approaching during enforcing 1.1 MHz waves, which was clarified by using both of evanescent light field and dark field with duplicated the non-contact cleaning process of the surface to be cleaned.

DOI： 10.1299/jsmekanto.2023.29.17d08

Other Link： https://www.jstage.jst.go.jp/article/jsmekanto/2023.29/0/2023.29_17D08/_pdf

Highly accurate flow rate measuring device for intravenous drip

Meguro Akira, Uchimura Mamoru, Panart Khajornrungruang, Ito Takahiro, Murakami Sunao

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2022A ( 0 ) 61 - 62 2022.08

Language：Japanese Publishing type：Research paper (other academic)

Flow rate control is essential for safety and time management in intravenous drip therapy. The main control method is to adjust the drop velocity. However, due to the influence of surfactants contained in some drugs, a drop may fall below the specified volume, and therefore, much effort and expense are required to improve the accuracy.In this paper, we report on the use of light to measure the volume of a droplet, and the successful miniaturization of a device and highly accurate flow rate measurement by devising an optical path. It is expected to contribute to the improvement of the performance of drip infusion systems.

DOI： 10.11522/pscjspe.2022a.0_61

Real Time Nanoscale Cleaning Phenomenon Observation During Enforcing MHz Wave By Evanescent Field Reviewed International journal

Terayama Y., Khajornrungruang P., Suzuki K., Mori R., Hamada S., Wada Y., Hiyama H.

ECS Transactions 108 ( 4 ) 17 - 23 2022.01

Proposal of a novel peeling of nano-particle (PNP) process for localized material removal on a hard material surface by controllable magnetic fields Reviewed

Permpatdechakul T., Khajornrungruang P., Suzuki K., Kutomi S.

European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 22nd International Conference and Exhibition, EUSPEN 2022 279 - 280 2022.01

Absolute longitudinal distance measurement verification of a standard polystyrene nanoparticle near a surface in water by means of multi-wavelength evanescent field Reviewed

Blattler A., Khajornrungruang P., Suzuki K., Baba A., Goto D.

European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 22nd International Conference and Exhibition, EUSPEN 2022 385 - 388 2022.01

Study on Visualization of Cleaning Phenomena in Nano-scale by Evanescent Field

KHAJORNRUNGRUANG Panart, TERAYAMA Yutaka, SUZUKI Keisuke, UTSUMI Haruki, HAMADA Satomi, WADA Yuutaka, HIYAMA Hirokuni

The Proceedings of Conference of Kanto Branch ( The Japan Society of Mechanical Engineers ) 2022.28 ( 0 ) 15H06 2022.01

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (other academic)

Cleaning phenomena in semiconductor manufacturing is about the nanoparticles being removed out from, or re-adhering to, or returning to the wafer surface. However, the residual nanoparticles from polishing slurry on the wafer are usually inspected only before and after cleaning process, not during wet cleaning process. Therefore, these cleaning phenomena mechanism on the surface have not already clearly known. We have been studying these phenomena by visualizing the nanoparticle motion on a surface in nanoscale wet cleaning process that are duplicated in lab-scale. This report focuses on the flow velocity distribution occurring on a surface that was obtained by duplicating the water flow in a micro fluid cell on a silica glass surface. We found that the flow, which is nearer than few micrometers from the surface being cleaned, has less shear flow velocity. Therefore, there should be some external force or energy, such as PVA brush or cavitation from ultrasonic, to remove residue particles in cleaning process.

DOI： 10.1299/jsmekanto.2022.28.15h06

Other Link： https://www.jstage.jst.go.jp/article/jsmekanto/2022.28/0/2022.28_15H06/_pdf

A novel method for 3d nanoscale tracking of 100 nm polystyrene particles in multi-wavelength evanescent fields microscopy – absolute difference height verification – Invited Reviewed International journal

Blattler A., Khajornrungruang P., Suzuki K., Saenna S.

International Journal of Automation Technology ( Fuji Technology Press Ltd. ) 15 ( 6 ) 831 - 841 2021.11

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

Total internal reflection is an optical imaging technique for nanoparticle tracking and observation employing the scattered light from an evanescent field near the interface or reference surface. Generally, the nanoparticle behavior is the three-dimensional Brownian motion in an aqueous medium. The motion can be traced by an optical microscopy, but it cannot be traced by an electron microscopy technique. In the three-dimensional nanoparticle moving position, the X and Y positions are parallel to the surface, which can be traced by the general microscopy techniques. However, the height position Z of a nanoparticle perpendicular to the surface could not be traced without the longitudinal scanning method. Here, a novel method is proposed to investigate the 3D position of nanoparticles by applying multi-wavelength evanescent fields microscopy, which has a high spatial resolution in the Z-direction without longitudinal scanning. This paper focuses on the verification of measurement in the Z-direction. A piezoelectric actuator was employed to control the nanoparticle displacement in height Z. Standard polystyrene 100 nm particles were randomly adhered on a spherical tip that connected with the piezoelectric actuator. The spherical tip was essentially made from an optical adhesive (n = 1.348) with a refractive index close to the water for decreasing the unnecessary signal from the tip-self during nanoparticle observation in the water. The proposed method could obtain the multi-wavelength scattering lights from the observed nanoparticles by an 8-bit color camera with higher than 50 frames per second recording to investigate the 3D nanoscale tracking. The X and Y positions of nanoparticles were determined by the centroid of the scattering light intensities. The height Z was determined from the logarithm ratios between the detected scattering light intensities of both wavelengths. The measurement repeatability of the absolute difference in height between nanoparticles could be measured less than ±16 nm by using the proposed method. The penetration height measurability range was approximated at 250 nm from the reference surface.

DOI： 10.20965/ijat.2021.p0831

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85118859497&origin=inward

Computational analysis of nano abrasive motion on SiC surface

Saenna Soraya, Khajornrungruang Panart, Suzuki Keisuke, Blattler Aran, Permpatdechakul Thitipat

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2021A ( 0 ) 126 - 127 2021.09

Authorship：Corresponding author Language：English Publishing type：Research paper (other academic)

The motion of nano-silica abrasive particle before attaching to the SiC surface being polished was analyzed numerically based on Brownian motion with DLVO theory, and then was compared with the results observed by evanescent light field localized on the SiC surface. We found that, when approximately 100 nm-sized silica particles are moving in close proximity within 100 nm from the SiC substrate surface, the nanoparticles would stay intermittently with slightly oscillating behavior before attaching to the surface.

DOI： 10.11522/pscjspe.2021a.0_126

Compact and highly accurate flow rate measuring device for intravenous drip

Uchimura Mamoru, Khajornrungruang Panart, Ito Takahiro, Murakami Sunao

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2021A ( 0 ) 383 - 384 2021.09

Study on Nanoscale Observatory in Polishing Phenomena applying Optical Evanescent Field

Permpatdechakul Thitipat, Khajornrungruang Panart, Suzuki Keisuke, Baba Akiyoshi

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2021A ( 0 ) 102 - 103 2021.09

Authorship：Corresponding author Language：English Publishing type：Research paper (other academic)

The nanoscale polishing phenomena between substrate surface, 105 nm-sized SiO2 particles slurry, and polishing pad during CMP process were experimentally observed and evaluated to identify the main factors which effectively polish a 4H-SiC substrate. The nanoscale polishing phenomena were observed in-situ by our developed compact apparatus applied an optical evanescent field. The observation is able to detect the scattering light from either the nano-abrasive particles or the pad asperities when they react to the surface to being polishing. The nanoparticle motion phenomena, which two conditions (i)only nanoparticles (without pad) and (ii)nanoparticles with pad sliding, on 4H-SiC substrate were observed. According to the observed results, the observed scattering light of nanoparticle on 4H-SiC was the ellipse shape compared with the observing on SiO2 substrate. Furthermore, we could observe the particles moved nearer and then adhered on the surface. Less particle’s Brownian motion when the particle moved nearer to the surface. In case of nanoparticle with pad sliding, we could observe only the scattering light of pad sliding because the scattering light intensity of particle is quite lower than pad. Therefore, approached nanoparticle to 4H-SiC surface phenomena might be one possible role to explain higher polishing rate CMP parameter.

DOI： 10.11522/pscjspe.2021a.0_102

Study on the observation of the behavior of nano fine particles using transparency resin sheet with low refractive index

Matsumoto Ryunosuke, Suzuki Keisuke, Hirota Ren, Kijoronrunrunog Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2021A ( 0 ) 110 - 111 2021.09

Authorship：Last author Language：Japanese Publishing type：Research paper (other academic)

In this study, the behavior of polishing particles was observed to clarify the material removal mechanism in CMP. A transparent pad with a low refractive index was fabricated by thermal imprinting using a transparent resin with the same refractive index as that of the slurry. In addition, we observed the behavior of the abrasive particles during polishing and discussed the relationship between the behavior of the abrasive particles and the step relaxation during polishing.

DOI： 10.11522/pscjspe.2021a.0_110

Study on On-Machine Visualization of Surface Processing Phenomena in Nanoscale

Blattler Aran, Khajornrungruang Panart, Suzuki Keisuke, Baba Akiyoshi

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2021A ( 0 ) 588 - 589 2021.09

Authorship：Corresponding author Language：English Publishing type：Research paper (other academic)

An abrasive nanoparticle behavior in chemical mechanical polishing (CMP) process is a three-dimensional (3D) motion near a substrate or reference surface. The height position is a longitudinal distance between the reference surface and nanoparticle, which is a challenge for measuring the height position in a wet condition. Our previous report could estimate the relative height of polystyrene 100 nm particles by applying multi-wavelength evanescent fields, but the absolute height was not confirmed yet. Therefore, in this report, we proposed a design concept for absolute height verification by using the developed nano-step height patterns. The nano-step height was approximately less than hundred nanometers from the reference surface. The nano-step height made from an optical resin that has a refractive index close to water to decrease the scattering light during observing nanoparticles in water. Polystyrene 100 nm particles on the nano-step height were used to estimate the absolute height of nanoparticle. The proposed concept could be used to verify the nanoparticle's absolute height in water, which can be applied to clarify the nanoparticle phenomena during the CMP process in the near future.

DOI： 10.11522/pscjspe.2021a.0_588

Real Time Nanoscale Observation in Cleaning Phenomena by Evanescent Field

Terayama Yutaka, Khajornrungruang Panart, Suzuki Keisuke, Mori Ryotaro, Hamada Satomi, Wada Yutaka, Hiyama Hirokuni

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2021A ( 0 ) 113 - 114 2021.09

3D trajectories and diffusion of single ceria particles near a glass surface and their removal Reviewed

Seo J., Gowda A., Khajornrungruang P., Hamada S., Babu S.V.

Journal of Materials Research 36 ( 1 ) 258 - 267 2021.01

近接場光を応用した工具刃先計測の数値シミュレーションによる散乱光特性の評価:第2報 : 工具材への金属モデルの適用

甲斐雅貴, カチョーンルンルアンパナート, 鈴木恵友

精密工学会学術講演会講演論文集 ( 公益社団法人精密工学会 ) 2021 ( 0 ) 635 - 636 2021.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal)

本稿では、近接場光を応用した工具刃先計測手法の確立のための援用シミュレーションの高精度化を目的とし、Drude-Lorentzモデルの導入を試みた．これにより従来のDrudeモデルのみを用いたものと比較し，波長により変化する反射率を考慮した解析が可能となった．また，更なる改善のために解析時のセルサイズによる影響を調査した．最後に工具刃先計測の散乱光シミュレーションを行い，得られた光散乱光特性を報告する．

DOI： 10.11522/pscjspe.2021S.0_635

Other Link： https://ci.nii.ac.jp/naid/130008084162

Study on the SUAM Double Magnet System for Polishing Reviewed International journal

Nakasaki Tatsuya, Kinoshita Yushi, Khajornrungruang Panart, Otabe Edmund Soji, Suzuki Keisuke

International Journal of Automation Technology ( Fuji Technology Press Ltd. ) 15 ( 4 ) 503 - 511 2021.01

Language：English Publishing type：Research paper (scientific journal)

Superconductive assisted machining (SUAM) is a novel machining method that eliminates tool interference via magnetic levitation tools. In our study, we developed a double magnet system (DMS) to increase the maximum power of the holding force and stabilize the magnetic rotation during polishing via the higher magnetic flux compared to a single magnet system (SMS). The maximum magnetic flux density of the DMS was approximately 100 mT higher than that of the SMS. In these cases, the entire holding force increases as the distance between the superconducting bulk and lower magnet decreases. The attractive forces are maximum around a displacement of 6 mm, although the repulsive and restoring forces increase spontaneously. The polishing performances of the DMS on the SUS304 and A1100P plates were evaluated using water-based diamond slurries, for equal levitation amounts. The amount removed by the DMS increased for the A1100P and SUS304 substrates compared to that by the SMS. In this case, we observe that the deviation of the polishing area on the DMS decreases compared to that of the SMS, reflecting a more stable rotation and movement due to the higher holding force.

DOI： 10.20965/ijat.2021.p0503

Other Link： https://ci.nii.ac.jp/naid/130008062468

Study on polishing method using magnetic levitation tool in superconductive-assisted machining Invited Reviewed

Nakashima H., Nakasaki T., Tanaka T., Kinoshita Y., Tanaka Y., Khajornrungruang P., Otabe E.S., Suzuki K.

International Journal of Automation Technology ( Fuji Technology Press Ltd. ) 15 ( 2 ) 234 - 242 2021.01

Language：English Publishing type：Research paper (scientific journal)

Superconductive-assisted machining (SUAM) is a polishing method that employs a magnetic levitation tool, which is based on a superconductive phenomenon called the pinning effect. Since the tool magnetically levitates, the issue of tool interference is eliminated. In this study, in order to set up the polishing conditions of the magnetic levitation tool, we evaluated the relation between the flux density distribution relative to the tool position and the holding force acting on the magnetic levitation tool to maintain its initial position, set by field cooling by the superconducting bulk. For the holding force, we measured the attractive, repulsive, restoring, and driving forces. We found that the greater the holding force, the smaller the initial distance between the superconducting bulk and the magnetic levitation tool. The attractive force was found to peak when the levitated tool was displaced 6 mm from an initial position of 9 mm from the bulk, and it became only the self-weight of the magnetic levitation tool at displacements of 30 mm and above, where the pinning effect broke down. We then evaluated the polishing characteristics for SUS304 and A1100P at a tool displacement that results in the maximum attractive force. In the polishing experiment, we employed a water-based diamond slurry because the temperature of the workpiece was close to room temperature. We found that it was possible to polish SUS304 and A1100P while avoiding the effects of magnetization due to the polishing pressure or induced currents that accompany the rotation of the metal plate. The arithmetic average roughness, Ra, of A1100P was relatively high due to the effect of scratches, while that of SUS304 improved from 92 nm before polishing to 55 nm after polishing when polished with grains with a diameter of 1 μm.

DOI： 10.20965/IJAT.2021.P0234

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85102894272&origin=inward

Study on Visualization of Cleaning Phenomena in Nano-scale by Evanescent Field:(Particle Removal and Re-adhesion Characteristics on Scrubbing)

KHAJORNRUNGRUANG Panart, TERAYAMA Yutaka, SUZUKI Keisuke, UTSUMI Haruki, HAMADA Satomi, WADA Yutaka, HIYAMA Hirokuni

The Proceedings of Conference of Kanto Branch ( The Japan Society of Mechanical Engineers ) 2021 ( 0 ) 10A02 2021.01

Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)

Cleaning phenomena in semiconductor manufacturing is about the nanoparticles being removed out from, or re-adhering to, or returning to the wafer surface. However, these residual nanoparticles from polishing slurry on the wafer are usually inspected before-and-after cleaning process, not during the wet cleaning process. Accordingly, these cleaning phenomena mechanism on the surface have already not clearly known. Therefore, we have been establishing dynamically visualization of wet cleaning phenomena on the surface applying localized light called evanescent light that is generated by an optically internal reflection. This report introduces some of observed physical characteristical phenomena during duplicated scrub cleaning process of 10 and 30 nm gold particles by PVA brushes without and with skin layer, which have different contact area ratio on the surface being cleaned.

DOI： 10.1299/jsmekanto.2021.27.10A02

Other Link： https://ci.nii.ac.jp/naid/130008091970

Real Time Nanoscale Observation in Cleaning Phenomena by Evanescent Field:3rd report: Detachment and Reattachment Behaviors of 20 nm Gold Single-particles during Enforcing Ultrasonic

Terayama Yutaka, Khajornrungruang Panart, Suzuki Keisuke, Mori Ryotaro, Hamada Satomi, Wada Yutaka, Hiyama Hirokuni

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2021 ( 0 ) 314 - 315 2021.01

Real-time visualization of the cleaning of ceria particles from silicon dioxide films using PVA brush scrubbing Reviewed

Ranaweera C.K., Khajornrungruang P., Hamada S., Gowda A., Vegi H., Seo J., Babu S.V.

ECS Journal of Solid State Science and Technology 10 ( 8 ) 2021.01

Brownian motion simulation of SiO2 abrasive nanoparticle on SiC substrate surface Reviewed International journal

SAENNA Soraya, KHAJORNRUNGRUANG Panart, BLATTLER Aran, PERMPATDECHAKUL Thitipat, SUZUKI Keisuke, BAKIER Mohammed A.

Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 ( The Japan Society of Mechanical Engineers ) 2021.10 ( 0 ) 178-171 2021.01

Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

Chemical-Mechanical Polishing (CMP) process has emerged as the method of choice for planarization in the semiconductor industry. The interaction force between the surface being polished and the abrasive nanoparticles plays a significant role in flattening the substrate surface in the CMP process. For example, when the SiO2 nanoparticle is distant from the SiC substrate surface, the interaction force between the surface and the nanoparticles is presented. This force could be analysed using Derjaguin and Landau and Verwey and Overbeek (DLVO) theory and particle Brownian motion. According to the simulation results, we found that very fine abrasive nanoparticle such as smaller than approximately 10 nm is comparatively approach to the surface being polished more certainly.

DOI： 10.1299/jsmelem.2021.10.178-171

Other Link： https://www.jstage.jst.go.jp/article/jsmelem/2021.10/0/2021.10_178-171/_pdf

Study on material removal mechanism for Cu-CMP on a patterned silicon wafer

Bakier M.A.Y.A., Matsumoto R., Fuchiwaki M., Khajornrungruang P., Suzuki K.

10th International Conference on Leading Edge Manufacturing Technologies in 21st Century, LEM 2021 243 - 245 2021.01

Brownian motion simulation of SiO<inf>2</inf> abrasive nanoparticle on SiC substrate surface Reviewed

Saenna S., Khajornrungruang P., Blattler A., Permpatdechakul T., Suzuki K., Bakier M.A.

10th International Conference on Leading Edge Manufacturing Technologies in 21st Century, LEM 2021 353 - 357 2021.01

Investigation on the Abrasive Phenomenon of Colloidal SiO2 Particles and Water-soluble C60 Inclusion Complex Particles in the CMP Process of the 4H-SiC Substrate Wafer Reviewed International journal

Tsai Yueh-Hsun, Suzuki Keisuke, Chen Chao-Chang A., Khajornrnrungruang Panart

Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 ( The Japan Society of Mechanical Engineers ) 2021.10 ( 0 ) 094-114 2021.01

Language：English Publishing type：Research paper (international conference proceedings)

This study used a water-soluble inclusion complex, fullerene/β-cyclodextrins(C60/β-CDs), as additive abrasive with conventional SiO2 slurry for the chemical mechanical polishing/planarization(CMP) of the silicon carbide substrate wafer. The hydrodynamic size(dH) of C60/β-CDs suspension was measured by the dynamic light scattering(DLS) method; the appearance of a C60/β-CDs inclusion complex is observed by TEM. The C60/β-CDs hybrid SiO2-based slurry performed a higher removal rate than conventional SiO2 slurry, and the polished surface showed a lower depression and roughness, too.

DOI： 10.1299/jsmelem.2021.10.094-114

Other Link： https://www.jstage.jst.go.jp/article/jsmelem/2021.10/0/2021.10_094-114/_pdf

Study on Polishing Method Using Double Magnet System by Superconductive Assisted Machining Method Reviewed International journal

Keisuke Suzuki, Tatsuya Nakasaki, Hidetaka Nakashima, Panart Kajornrunruan, Misaki Onomata, Yushi Kinoshita, Ruizhe Zhang, Edmund Soji Otabe

JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing 2020.09

High-speed three-dimensional tracking of individual 100 nm polystyrene standard particles in multi-wavelength evanescent fields Invited Reviewed

Aran Blattler, Panart Khajornrungruang, Keisuke Suzuki, Thitipat Permpatdechakul

Measurement Science and Technology 31 ( 9 ) 2020.09

Advanced chemical-mechanical planarization for 4H-SiC substrate by water-soluble inclusion complexes of fullerene Reviewed International journal

Tsai Y.H., Chen C.C.A., Suzuki K., Khajornrungruang P., Chiu S.F., Hua C.T.

Japanese Journal of Applied Physics 59 ( SL ) 2020.07

Trajectories, diffusion, and interactions of single ceria particles on a glass surface observed by evanescent wave microscopy Reviewed

Seo J., Gowda A., Khajornrungruang P., Hamada S., Song T., Babu S.

Journal of Materials Research 35 ( 3 ) 321 - 331 2020.02

Study on novel nano fine particles reacted with fullerene for hard to process material

Hisayoshi Fuya, Suzuki Keisuke, Tsai Yueh-Hsun, Khajornrungruang Panart, Yasunaga Takuo, Takazaki Hiroko, Ouchi Masayoshi

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2020 ( 0 ) 486 - 487 2020.01

局在光によるナノ研磨現象観測に関する研究:第1報:開発した小型装置による実験的評価

パームパッデーチャークンティティパット, カチョーンルンルアンパナート, 鈴木恵友, ブラットラーアラン, 寺山裕

精密工学会学術講演会講演論文集 ( The Japan Society for Precision Engineering ) 2020 ( 0 ) 658 - 659 2020.01

Authorship：Corresponding author Language：English Publishing type：Research paper (other academic)

The nanoscale polishing phenomena between the substrate surface and polishing pad during process, such as CMP process, were observed and evaluated, in this report. The concept of observation method is applied the generated evanescent field to limit the observable region only on the surface being polished, and the detectable scattering light from the nanoparticles and polishing pad when they move close to the surface in a range of evanescent field. The detected scattering light intensity could be used for evaluating the phenomena. According to the observed results, there should have been more than two different phenomena in polishing; the particles adhering on the polishing pad, and the individual movement particles during moving. However, the phenomena being able to perform polishing, could not clearly identify yet.

DOI： 10.11522/pscjspe.2020S.0_658

Other Link： https://ci.nii.ac.jp/naid/130007896847

作用表面上におけるナノスケール現象の化学的実時間観測に関する研究:第1報:ラマン分光光度計の開発

ドバンタン, カチョーンルンルアンパナート, 鈴木恵友

精密工学会学術講演会講演論文集 ( The Japan Society for Precision Engineering ) 2020 ( 0 ) 622 - 623 2020.01

Authorship：Corresponding author Language：English Publishing type：Research paper (other academic)

This paper reports development of an optical apparatus for Real-time observation during chemical reactions in Nano-scale process on surface such as CMP (Chemical-Mechanical polishing) and catalysis by applying in evanescent field. Beside using evanescent field to observe Nano-particles in physical aspects, the developed Raman spectroscopy apparatus aims to observe chemical aspects during reactions on processing surface. Changes in Raman scattering spectrum is expected to understand chemical reactions on the processing surface. In this report, the 532 nm wavelength laser source will be used to generate evanescent field. A rotation stage of diffraction grating and a translation stage will used to optimize the Raman spectrum data.

DOI： 10.11522/pscjspe.2020S.0_622

Other Link： https://ci.nii.ac.jp/naid/130007896772

ナノスケールにおける加工現象可視化に関する研究:第6報:単一ナノ粒子の三次元目変位の検証

ブラットラーアラン, カチョーンルンルアンパナート, 鈴木恵友, パームパッデーチャークンティティパット

精密工学会学術講演会講演論文集 ( The Japan Society for Precision Engineering ) 2020 ( 0 ) 588 - 589 2020.01

Authorship：Corresponding author Language：English Publishing type：Research paper (other academic)

The nanoscale phenomena, such as chemical mechanical polishing (CMP) process, present near the surface. A three-dimensional nanoparticle tracking could explain the phenomena that happen in the polishing process. From our previous report, we have investigated the three-dimensional motion of an individual standard nanoparticle by using optical method, but the height Z on the third dimension was not accurately verified. In this report, the sub-100 nm individual nanoparticles were fixed on the tip which the tip was connected to the piezo actuator for controlling the height Z displacement. The multi-wavelength evanescent fields with optical microscopy system is also applied in the experiment for three-dimensional nanoparticle tracking. The scattering light from nanoparticle will exponentially increase when the nanoparticle on the tip was downward moved close to the reference surface. Finally, The height Z uncertainty could be measured approximately ±25 nm and the penetration height measurability were 200 nm far from the reference surface. We could three-dimensionally track the individual standard nanoparticle in recording speed higher than 50 frames per second for exposure time less than 10 milliseconds.

DOI： 10.11522/pscjspe.2020S.0_588

Other Link： https://ci.nii.ac.jp/naid/130007896683

Study on Visualization of Cleaning Phenomena in Nano-scale by Evanescent Field

KHAJORNRUNGRUANG Panart, TERAYAMA Yutaka, SUZUKI Keisuke, HAMADA Satomi, WADA Yuutaka, HIYAMA HIYAMA

The Proceedings of Conference of Kanto Branch ( The Japan Society of Mechanical Engineers ) 2020 ( 0 ) 17E02 2020.01

Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)

Cleaning phenomena in semiconductor manufacturing is about the nano-contamination being repelled out from, or adhering to, the wafer surface. However, residual contamination on the wafer has been usually inspected only before and after cleaning process, not during wet cleaning process. Therefore, these cleaning phenomena mechanism on the surface have not already clearly known. We have been establishing dynamically visualization of wet cleaning phenomena on the surface applying localized light called evanescent light generated by internal reflection. This article introduces some of observed physical phenomena during duplicated cleaning process in both contact cleaning by a PVA brush and non-contact cleaning by mega-sonic wave.

DOI： 10.1299/jsmekanto.2020.17E02

Other Link： https://ci.nii.ac.jp/naid/130007994424

Real Time Nanoscale Observation in Cleaning Phenomena by Evanescent Field:2nd report : Non-contact Removal of Abrasive Nano-particles during Enforcing Mega sonic

Terayama Yutaka, Khajornrungruang Panart, Suzuki Keisuke, Permpatdechakul Thitipat, Hamada Satomi, Wada Yutaka, Hiyama Hirokuni

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2020 ( 0 ) 660 - 661 2020.01

Three-dimensional tracking and height verification of polystyrene particles with piezo actuator positioning by means of multi-wavelength evanescent fields Reviewed

Blattler A., Khajornrungruang P., Suzuki K., Permpatdechakul T.

Proceedings of the 20th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2020 53 - 56 2020.01

3D trajectories and diffusion of single ceria particles near a glass surface and their removal Reviewed

Seo J., Gowda A., Khajornrungruang P., Hamada S., Babu S.V.

Journal of Materials Research 2020.01

Hydropower plant generator system model using labVIEW Reviewed International journal

Tammaruckwattana S., Reangkittakarn S., Khajornrungruang P., Phaisalpanumas P., Rerkratn A.

Proceeding - 5th International Conference on Engineering, Applied Sciences and Technology, ICEAST 2019 2019.07

Study on Relationship of the Material Removal Amount and the Increase in Abrasive Nanoparticle Size during Si-CMP Reviewed International journal

Boripatkosol S., Bun-Athuek N., Khajornrungruang P., Suzuki K., Chanthawong N., Phaisalpanumas P.

ESIT 2018 - 3rd International Conference on Engineering Science and Innovative Technology, Proceedings 2019.03

Real Time Nanoscale Observation in Cleaning Phenomena by Evanescent Field Reviewed

Terayama Yutaka, Kusatsu Kohei, Morita Rintaro, Khajornrungruang Panart, Wada Yutaka, Hamada Satomi, Hiyama Hirokuni

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2019S ( 0 ) 138 - 139 2019.03

Characteristic Evaluation of Scattering Light from Cutting edge in Evanescent Field by Using Numerical Simulation Method

Aramaki Hirochika, Khajornrungruang Panart, Suzuki Keisuke, Taira Kanako

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2019S ( 0 ) 904 - 905 2019.03

Study on On-Machine Visualization of Surface Processing Phenomena in Nanoscale

Blattler Aran, Khajornrungruang Panart, Suzuki Keisuke, Permpatdechakul Thitipat

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2019S ( 0 ) 459 - 460 2019.03

Authorship：Corresponding author Language：English Publishing type：Research paper (other academic)

The nanoparticle is popularly used for chemical mechanical polishing process (CMP) in semiconductor industry. There are many unknown phenomena in nanoparticles moving during polishing process. Therefore, we have been studying the phenomena by using optical method on 3D position tracking of nanoparticle in real-time measurement. In this report, the gold 50 nm standard particles would be observed to determine the 3D motion tracking of individual nanoparticle. According to our previous studies, the single wavelength of evanescent light field is hard to determine the 3D spatial position of each nanoparticle. Thus, the multi-wavelength of scattering light is applied in the experiment. The scattering light will occur when the particle moving near to the reference surface. Finally, the 3D position tracking results of standard nanoparticle will be investigated and discussed by the exponential relationships between the detected scattering light and the measured depth Z values.

DOI： 10.11522/pscjspe.2019s.0_459

Research on high speed polishing technology using electrode embedded type low refractive transparent pad Reviewed

Kato Yuya, Ryunosuke Matsumoto, Suzuki Keisuke, Panart Khajornrungruang

The Proceedings of The Manufacturing & Machine Tool Conference ( The Japan Society of Mechanical Engineers ) 2019 ( 0 ) D39 2019.01

Language：English Publishing type：Research paper (scientific journal)

The manufacturing process of the transparent pad was developed by the thermal imprint method equipped with a special jig for controlling the thickness, pattern and electrode structure. Particle behavior is controlled by the electric field using a wire mesh inserted into a low index transparent polishing pad. As a result, the movement of hybrid particles of diamond particles and silica particles can be observed in an electric field using a digital microscope. Furthermore, in the polishing experiment, it was possible to obtain a higher amount of material removal in the presence of the electric field than in the absence of the electric field.

DOI： 10.1299/jsmemmt.2019.13.D39

Other Link： https://ci.nii.ac.jp/naid/130007836392

Study on processing method using superconductive assisted machining method

NAKASHIMA Hidetaka, NAKASAKI Tatsuya, TANAKA Yuki, KHAJORNRUNGRUANG Panart, OTABE Edmund Soji, SUZUKI Keisuke

The Proceedings of The Manufacturing & Machine Tool Conference ( The Japan Society of Mechanical Engineers ) 2019 ( 0 ) D38 2019.01

Language：Japanese Publishing type：Research paper (other academic)

In recent years, superconductive assisted machining method (SUAM) using a magnetic levitation tool utilizing a superconducting phenomenon such as pinning effect has been developed to reduce tool interference on the conventinal procceing method. Measurement of the force by the magnetic levitation tool is evauated in the air to determind polishing conditions. In our study, polishing test were performed not only on aluminum plate but also stainless steel plate using fixed and loose abrasives. As a result, the superconductive assisted machining method was applicable to stainless steel material.

DOI： 10.1299/jsmemmt.2019.13.D38

Other Link： https://ci.nii.ac.jp/naid/130007836391

点滴流量精密計測の研究:Z値による画像処理とレンズ収差の影響

高市峻佑, カチョーンルンルアンパナート, 伊藤高廣, 村上直

精密工学会学術講演会講演論文集 ( 公益社団法人精密工学会 ) 2019 ( 0 ) 476 - 477 2019.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

病院などで使用されている点滴装置は，流量を一定に保つために正確な流量測定が必要である．特に，抗がん剤などの副作用がある薬液を使用する場合には，より正確性が求められている．現在使用されている点滴測定装置は，液滴の濃度が高いと精度が悪化するというデメリットがあるため，液滴の種類によらず測定できる測定手法が求められている．本研究では，画像処理を使用した体積推定により，液滴の体積を測ることを目的とした．

DOI： 10.11522/pscjspe.2019A.0_476

Other Link： https://ci.nii.ac.jp/naid/130007800991

Study on Real Time Phenomenon Observation of Nano-Particle Adhesion and Removal by Evanescent Light

MORITA Rintarou, Khajornrungruang Panart, TERAYAMA Yutaka, KUSATSU Kohei, HIYAMA Hirokuni, WADA Yuutaka, HAMADA Satomi

The Proceedings of Conference of Kanto Branch ( The Japan Society of Mechanical Engineers ) 2019 ( 0 ) 18A02 2019.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

The study on removal mechanism of nanoparticles near to polished wafer surface is necessary to efficiently clean the nano-particles from the wafer in semiconductor manufacturing process. An optical method has been applied to visualize only the nano-particles moving near to a surface by an evanescent field. We generated the evanescent field locating in limited range from the film surfaces by reflecting a laser beam at an incident angle larger than critical angle. The removal phenomena of the SiO2 particles (105 nm) on the BK7 glass surfaces were observed by our developed experimental setup. The SiO2 particles removal with ultrasonic (approx. 1 MHz) was demonstrated.

DOI： 10.1299/jsmekanto.2019.25.18A02

Other Link： https://ci.nii.ac.jp/naid/130007712645

The Performance Evaluation of Developed Apparatus for Observing the Nanoparticles Phenomena During CMP Process by Applying Evanescent Field

Permpatdechakul Thitipat, Khajornrungruang Panart, Suzuki Keisuke, Blattler Aran, Taira Kanako

日本機械学会九州支部講演論文集 ( The Japan Society of Mechanical Engineers ) 2019 ( 0 ) A42 2019.01

Authorship：Corresponding author Language：English Publishing type：Research paper (other academic)

In this paper, the performance evaluation of developed in-situ apparatus for real-time observation were studied. The apparatus could observe the nanoparticles phenomena on surface between substrate and polishing pad that is essential to improve the Material Removal Rate (MRR) of the substrate during Chemical Mechanical Polishing (CMP) process. We propose the single wavelength by applying an evanescent field in order to observe the nanoparticles phenomena. The experimental condition were separated into two experiments, as different size (sub 10 nm and 105 nm) silica slurry ( 5 wt% with pH 10.5) with pure water (pH 10.5). According to the experimental result, the our apparatus could detect the scattering light intensity of pure water and silica slurry during polishing process. The silica slurry are higher scattering light intensity than pure water, and sub 10 nm silica slurry is highest intensity.

DOI： 10.1299/jsmekyushu.2019.72.A42

Other Link： https://ci.nii.ac.jp/naid/130007801889

Study on Organic Fibers in The Polishing Pad for Sapphire Chemical Mechanical Polishing

Chansatarpornkul Sansuwan, カチョーンルンルアンパナート, 鈴木恵友

精密工学会学術講演会講演論文集 ( The Japan Society for Precision Engineering ) 2019 ( 0 ) 18 - 19 2019.01

Language：English Publishing type：Research paper (other academic)

Chemical mechanical polishing (CMP) is an essential process in the manufacturing of sapphire substrate that needs to achieve a smooth planar surface without subsurface damage. Definitely, the polishing pad is one of the dominant factors in the polishing. In recent years, there are trends to decrease the synthases material that formed by chemical production for our world environment. The organic fibers are having uniform structure, easy to fabricate from the natural or waste product from agro-industry or food industry, and can be control the diameter from micro unit until nano size such as cellulose nanofibers. This study aims to developed polishing pad with organic polishing pad from the several kinds of fibers such as; bamboo, sugarcane bagasse, banana, and pineapple fibers. As a result, naturally SiO2-contained fiber types that were bamboo and bagasse, performed considerably higher material removal rate (MRR) more than a conventional pad by 157% and 191% respectively. On the other hand, none-SiO2 fiber type (banana, pineapple) did not perform MRR completely. Therefore, we conclude that the SiO2 in the organic fibers could improve a material removal rate of sapphire CMP.

DOI： 10.11522/pscjspe.2019A.0_18

Other Link： https://ci.nii.ac.jp/naid/130007800812

Real time nanoscale cleaning phenomenon observation during PVA brush scrubbing by evanescent field Reviewed International journal

Terayama Y., Khajornrungruang P., Suzuki K., Kusatsu K., Hamada S., Wada Y., Hiyama H.

ECS Transactions 92 ( 2 ) 191 - 197 2019.01

FDTD Simulation for Analysing Scattering Light Characteristic of Moving Nano-particle in Evanescent Field

Khajornrungruang PANART, SUZUKI Keisuke, TAIRA Kanako, ARAMAKI Hirochika

The Proceedings of The Manufacturing & Machine Tool Conference ( The Japan Society of Mechanical Engineers ) 2019 ( 0 ) D18 2019.01

Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)

In surface fabrication process, such as the polishing in semiconductor substrate, there are many nano-particles moving on or nearby the surface to be polished. We have been establishing an optical method to observe and to track the 3-dimensional position of each dynamical moving nano-particle on time by applying an evanescent light field. In this report, the scattering light characteristic from a moving nano-particle in an evanescent field generated by internal reflection on a silica glass surface was analysed by FDTD (Finite Difference Time Domain) method on MATLAB. We discuss the scattering light from a particle moving perpendicularly to a surface in an interval time as one recorded frame in practical observation.

DOI： 10.1299/jsmemmt.2019.13.D18

Other Link： https://ci.nii.ac.jp/naid/130007836425

Visualization of Slurry Flow between Polishing Pad and Wafer in CMP (4th Report)

Fukuda Akira, Sekiduka Noriaki, Yamamoto Hiroki, Suzuki Keisuke, Khajornrungruang Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2018A ( 0 ) 295 - 296 2018.08

Study on the Optimization of Hybrid fine particles on Chemical Mechanical Polishing of Hard to process materials

Suzuki Keisuke, Bun-Athuek Natthaphon, Takazaki Hiroko, Yasunaga Takuo, Yoshimoto Yutaka, Khajornrungruang Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2018A ( 0 ) 312 - 313 2018.08

Authorship：Last author Language：Japanese Publishing type：Research paper (other academic)

We repot on the hybrid fine particles using core silica particles adsorbed on the ultra fine nano particles such as nano silica particles (ca.4nm diameter) and fullerenol for Chemical Mechanical Polishing of Hard to process materials. In our study, chemical reactivity and mechanical action from the hybrid particles were investigated using the several diameters of the core silica particles. At the case of adsorption of the nano silica particles and fullerenol, chemical reactivity become dominant parameter under the small size region although the nano particle is coated on the surface of the core silica particles. These results expect that both parameters as chemical reactivity and mechanical action can be control by the sizes of core particles and coating condition of the nano silica particles. We also optimize the structure of the hybrid silica particles at the case of the nano silica particles and/or fullerenol to meet the high performance CMP of hard to process materials and discuss about these results.

DOI： 10.11522/pscjspe.2018a.0_312

Effects of mixed ultrafine colloidal silica particles on chemical mechanical polishing of sapphire Reviewed International journal

Bun-Athuek N., Takazaki H., Yoshimoto Y., Khajornrungruang P., Yasunaga T., Suzuki K.

Japanese Journal of Applied Physics 57 ( 7 ) 2018.07

Study on Non-Contact Micro Tool Tip Nano-Position Detection by Means of Evanescent Field Penetration Depth Reviewed

Panart Khajornrungruang, Keisuke Suzuki, Tomoki Inoue

2018.06

Analytical on mixed colloidal silica particle in slurry of sapphire Chemical Mechanical Polishing Reviewed

BUN-ATHUEK NATTHAPHON, YOSHIMOTO YUTAKA, SAKAI KOYA, KHAJORNRUNGRUANG PANART, SUZUKI KEISUKE

LEM21 2017 ( 0 ) 2018.05

Development of new polishing pad with a semispherical shape formed by materials with different wear rates

ONIKI Takahiro, KATO Yuya, KHAJORNRUNGRUANG Panart, SUZUKI Keisuke, TASHIRO Yasunori, MATSUO Masaaki

Journal of the Japan Society for Abrasive Technology ( The Japan Society for Abrasive Technology ) 62 ( 5 ) 264 - 266 2018.05

Language：Japanese Publishing type：Research paper (other academic)

We have developed a polishing pad using materials with different wear rates to achieve highly efficient polishing of difficult-to-process material substrates. Nylon fibers with good mechanical properties are arranged with other materials, followed by dressing to form protrusions on the polishing pad surface. Stable polishing performance can be expected if the orientation and arrangement of the nylon fibers can be controlled. A sapphire substrate was polished using the prototype polishing pad developed in this research. The results indicated 30% improvement in material removal rate compared to the ready-made pad.

DOI： 10.11420/jsat.62.264

Study of Electroosmotic Micro-Flow Enhanced Abrasives Distribution in Nanoparticle Contained Slurry for Copper Chemical Mechanical Planarization Reviewed

Tsai Yueh-Hsun, Suzuki Keisuke, Chang Chao-Chung, Khajornrungruang Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2018S ( 0 ) 781 - 782 2018.03

Language：English Publishing type：Research paper (other academic)

Chemical mechanical planarization is one of the crucial steps for the manufacturing process of semiconductor. CMP process with good adaptability can lead to high productivity, low defect, and coping with the ever-changing materials. In CMP process, slurry plays a big role in material removal. Among the composition of slurry, the abrasive predominates in the removal rate and surface quality. Therefore, this study develops the application of water-soluble nanoparticles, such as fullerene, as abrasives for the copper CMP process. By electroosmotic phenomenon, a kind of electro kinetic force, it generates the micro-flow field for abrasive during CMP process. The increasing disturbance of flow enhances the uniformity of abrasive distribution and polishing efficiency. The electrode embedded polishing platen which causes the electroosmotic flow on polishing pad is revealed and simulated by multi-physics fields coupling software, COMSOL Multiphysics. Finally, comparing with the results of simulation and flow visualization with fluorescent powders, the optimal and reasonable design is discussed.

DOI： 10.11522/pscjspe.2018s.0_781

Accurate measurement of flow rate of continuous fluid

Takeuchi Ryosuke, Takaichi Shunsuke, Murakami Sunao, Ito Takahiro, Khajornrungruang Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2018S ( 0 ) 873 - 874 2018.03

Study on On-Machine Visualization of Surface Processing Phenomena in Nanoscale-4th: Estimation of longitudinal Resolution

Shirakawa Hiroaki, Blatter Aran, Takemoto Ryo, Khajornrungruang Panart, Suzuki Keisuke

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2018S ( 0 ) 129 - 130 2018.03

Study on non-contact micro tool tip nano-position detection by means of evanescent field penetration depth Reviewed International journal

Khajornrungruang P., Suzuki K., Inoue T.

European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 18th International Conference and Exhibition, EUSPEN 2018 139 - 140 2018.01

Study on polishing method using magnetic levitation tool by superconducting Reviewed

TANAKA Yuki, NAKASHIMA Hidetaka, HIRAMATU Yuta, KHAJORNRUNGRUANG Panart, OTABE Edmund Soji, SUZUKI Keisuke

Journal of the Japan Society for Abrasive Technology ( The Japan Society for Abrasive Technology ) 62 ( 4 ) 219 - 220 2018.01

Language：Japanese Publishing type：Research paper (scientific journal)

Precision machining techniques have a number of serious problem, such as tool interference against complicated machining shapes and improvement of accuracy in processing. To resolve these issues, we suggest the Superconductive Assisted Machining (SUAM) method, which involves application of a magnetic levitation tool using the pinning effect of superconductivity during polishing processing. The SUAM method can eliminate tool interference because machining shape is determined by movement of the magnetic levitation tool during processing. Here, we measured the holding force, such as attractive and repulsive forces, from the pinning effect of superconductivity. The results indicated a maximum attractive force of 4 N with an initial magnetic levitation tool height of 9 mm. In this case, the holding force was dependent on the initial distance between the magnetic levitation tool and the superconductor bulk. In addition, we evaluated the dependence of polishing pressure and rotation frequency on polishing rate using fixed abrasive polishing pads. The results indicated that the polishing removal rates increase with increasing polishing pressure and rotation frequency.

DOI： 10.11420/jsat.62.219

Other Link： https://ci.nii.ac.jp/naid/130007492417

Study on polishing processing using Superconductive Assisted Machining method(SUAM)

TANAKA Yuki, NAKASHIMA Hidetaka, ONOMATA Misaki, Khajornrungruang P, OTABE Soji, SUZUKI Keisuke

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2018.71 ( 0 ) F36 2018.01

Study on fabrication method of low refractive transparent pad by thermal transfer

Kato Yuya, Suzuki Keisuke, Khajornrungruang Panart, Yamaguchi Yuta, Tsai Yueh-Hsun

The Proceedings of The Manufacturing & Machine Tool Conference ( The Japan Society of Mechanical Engineers ) 2018.12 ( 0 ) D06 2018.01

Language：Japanese Publishing type：Research paper (other academic)

Fabrication process of the pad has been developed by imprint method with special zig to control of the thickness and patter and electrode structure. Movement of the fine particle is controlled by electrical field using copper wire electrode inserted in the low refractive index – transparency polishing pad. As results, we can be observe the movement of the diamond particle between the pattern structures under the pad by electrical field using digital microscope.

DOI： 10.1299/jsmemmt.2018.12.d06

Other Link： https://www.jstage.jst.go.jp/article/jsmemmt/2018.12/0/2018.12_D06/_pdf

Observation of Nano-particle Adhesion and Desorption Phenomenon Near to Silicon Nitride and Oxide Film Surface in an Evanescent Field

TERAYAMA Yutaka, NAKANO Asato, Khajornrungruang Panart, SUZUKI Keisuke, WADA Yutaka, HAMADA Satomi

The Proceedings of Conference of Kanto Branch ( The Japan Society of Mechanical Engineers ) 2018.24 ( 0 ) OS0105 2018.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

The study on adhesion and desorption mechanism of nanoparticles near to polished wafer surface is necessary to efficiently clean the nano-particles from the wafer in semiconductor manufacturing process. This report proposes an optical method to visualize only the nano-particles moving near to Si3N4 and SiO2 film surfaces by applying an evanescent field. We generated the evanescent field locating in limited range from the film surfaces by reflecting a laser beam at an incident angle larger than critical angle. Adhesion and desorption phenomena of the polystyrene latex standard particles (50±1 nm) and the SiO2 particles (55 nm) moving near to the Si3N4 and SiO2 film surfaces were observed by our developed experimental setup. Furthermore, desorption phenomenon of SiO2 particles (105 nm) with the flow occurred by polyvinyl alcohol (PVA) sponge brush sliding was also demonstrated.

DOI： 10.1299/jsmekanto.2018.24.os0105

Other Link： https://www.jstage.jst.go.jp/article/jsmekanto/2018.24/0/2018.24_OS0105/_pdf

Study on the nano combined fine particles in the CMP

SAKAI Koya, UEDA Tatsunori, YOSHIMOTO Hiroshi, SUZUKI Keisuke, BUN-ATHUEK NATTHAPHON, KHAJORNRUNGRUANG PANART

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2018.71 ( 0 ) G26 2018.01

Study on hybrid fine particles with nano particles for hard to process materials

UEDA Tatsunori, SAKAI Koya, YOSHIMOTO Hiroshi, BUN-ATHUEK NATTHAPHON, KHAJORNRUNGRUANG PANART, SUZUKI Keisuke

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2018.71 ( 0 ) G25 2018.01

Evaluation Method of the Approach of Nanoparticles-to-Surface in Chemical Mechanical Polishing using Optical Evanescent Field Reviewed International journal

Khajornrungruang Panart

Proc. of ICPT 2018 2018 356 - 360 2018.01

Study on Mechanism of High Material Removal in Sapphire-CMP with Sub-10nm Silica Particles using Evanescent Field Light Reviewed

Khajornrungruang Panart

Proc. of ICPT 2018 2018 76 - 81 2018.01

Analytical on mixed colloidal silica particle in slurry of sapphire chemical mechanical polishing Reviewed

2017.11

Study on effect of the surface variation of colloidal silica abrasive during chemical mechanical polishing of sapphire Reviewed International journal

Bun-Athuek N., Yoshimoto Y., Sakai K., Khajornrungruang P., Suzuki K.

Japanese Journal of Applied Physics 56 ( 7 ) 2017.07

In situ measurement method for film thickness using transparency resin sheet with low refractive index under wet condition on chemical mechanical polishing Reviewed International journal

Oniki T., Khajornrungruang P., Suzuki K.

Japanese Journal of Applied Physics 56 ( 7 ) 2017.07

Micro tool diameter monitoring by means of laser diffraction for on-machine measurement Reviewed International journal

Khajornrungruang P., Kimura K., Suzuki K., Inoue T.

International Journal of Automation Technology 11 ( 5 ) 736 - 741 2017.01

Non-contact Micro Tool Tip Position Detection Method by Evanescent Light Field

Khajornrungruang PANART, INOUE Tomoki, SUZUKI Keisuke

The Proceedings of Mechanical Engineering Congress, Japan ( The Japan Society of Mechanical Engineers ) 2017 ( 0 ) S1330103 2017.01

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (other academic)

Non-contact tool setter for rotating micro tools has been needed because the position of tool tip during rotation is different from the position when the tool is not rotating. Furthermore, precision of tool position measurement is definitely required in nanoscale due to the miniaturization of micro rotating tool size down to smaller than 50μm. An evanescent light field is applied to detect a micro tool tip position in nanoscale without contacting between micro tool and detector. In this report, micro tools with diameter of φ 50μm were approached to and/or departed from a glass reference plane surface by a nano-controled piezo actuator to verify our detection method. Consequently, the tool tips were detected in the evanescent field during 300 nm range from the reference surface, implying that the tool tip can be detected in the precision of less than ±150 nm by only observing the scattering light from the evanescent light field without contacting.

DOI： 10.1299/jsmemecj.2017.s1330103

Other Link： https://www.jstage.jst.go.jp/article/jsmemecj/2017/0/2017_S1330103/_pdf

Study on processing technology using magnetic levitation tool by superconducting

Tanaka Yuki, Suzuki Keisuke, Khajornrungruang Panart, Otabe Soji, Nakashima Hidetaka

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2017A ( 0 ) 765 - 766 2017.01

Study on processing technology using magnetic levitation tool by superconducting

TANAKA Yuki, SUZUKI Keisuke, Khajornrungruang P

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2017.70 ( 0 ) 907 2017.01

低屈折率の透明樹脂パッドを用いたCMPにおけるモニタリング技術に関する研究

鬼木喬玄, 鈴木恵友, カチョーンルンルアンパナート

精密工学会学術講演会講演論文集 ( 公益社団法人精密工学会 ) 2017S ( 0 ) 523 - 524 2017.01

Authorship：Last author Language：Japanese Publishing type：Research paper (other academic)

水と同等の屈折率を有する透明な樹脂パッドを用いて、スラリー中の微粒子観察やシリコン酸化膜の膜測など、CMPにおけるモニタリング技術に関する研究を行っている。今回は低屈折率の透明樹脂パッドを用いたモニタリング技術のコンセプトと、その足がかりとなる実験データについて報告する。

DOI： 10.11522/pscjspe.2017s.0_523

ナノスケールにおける加工現象可視化に関する研究 Reviewed

白川裕晃, カチョーンルンルアンパナート, 鈴木恵友

精密工学会学術講演会講演論文集 ( 公益社団法人精密工学会 ) 2017A ( 0 ) 985 - 986 2017.01

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (other academic)

ナノスケールにおける加工現象として，ナノ粒子を用いたポリシング加工がある．本研究は，ポリシング加工のナノ粒子の挙動を観察し，ナノ粒子による加工現象を解明することを目的とする．そこで本研究では，表面上近傍に局在するエバネッセント光を用いた実時間観測を行っている．既知のナノ単粒子に多波長エバネッセント光を当て，その散乱光の強度を調べたので，ここに報告する．

DOI： 10.11522/pscjspe.2017a.0_985

Study on evaluation method for surface topography of polishing pad based on optical Fourier transform Reviewed International journal

Suzuki K., Tajiri T., Khajornrungruang P., Mochizuki Y., Hiyama H., Matsuo H.

2015 International Conference on Planarization/CMP Technology, ICPT 2015 2016.02

I-11 サファイアCMPにおけるコロイダルシリカと水酸化フラーレンの混合スラリーの最適化

BUN-ATHUEK NATTHAPHON, KHAJORNRUNGRUAN PANART, MURAKAWA WATARU, SATOU TOKIHITO, SUZUKI KEISUKE

日本機械学会九州支部講演論文集 2016 ( 0 ) 361 - 362 2016.01

Study on fine particles observation using Transparency micro-patterned pad during CMP

ONIKI Takahiro, SUZUKI Keisuke, KHAJORNRUNGRUANG Panart

The Proceedings of Mechanical Engineering Congress, Japan ( The Japan Society of Mechanical Engineers ) 2016 ( 0 ) S1330203 2016.01

Authorship：Last author Language：Japanese Publishing type：Research paper (other academic)

Transparency micro-patterned pad is used to observe fine particles by an epi-illumination microscope. The material of transparency micro-patterned pad is resin which has almost same as the refractive index of water. Therefore, it has characteristic that the micro pattern could disappear in the observation image by filling water. Epi-illumination microscope has illumination system and the detection system on the same side. In this study, we succeeded to observe the diamond particles with a diameter of 1μm on the glass substrate at 1000 frame/s in dark-field illumination. This results show that the fine particles could be observed simplicity, and also suggest the possibility that the fine particles observation on opaque substrate using the epi-illumination microscope.

DOI： 10.1299/jsmemecj.2016.s1330203

Other Link： https://www.jstage.jst.go.jp/article/jsmemecj/2016/0/2016_S1330203/_pdf

超伝導バルクを利用した磁気浮上工具による中空加工技術に関する研究

日高裕, 上原和晃, カチョーンルンルアンパナート, 小田部荘司, 鈴木恵友

精密工学会学術講演会講演論文集 ( 公益社団法人精密工学会 ) 2016S ( 0 ) 971 - 972 2016.01

Language：Japanese Publishing type：Research paper (other academic)

本研究では超電導現象である磁気浮上を利用し、金型や3Dプリンタなどの中空部品成形技術が抱える問題を解消する新規中空加工技術の確立を目指している。その概要としては、磁気浮上を利用して磁性体や超伝導体を一定間隔離して浮上させトラップし、さらに回転運動を加え回転工具とすることで被加工物を切削する技術である。本報では樹脂などを用いて本加工技術の原理検証を行ったので、その内容について報告する。

DOI： 10.11522/pscjspe.2016s.0_971

ポリシング前後におけるスラリー中の研磨微粒子径に関する研究

永井利幸, 八尋新, カチョーンルンルアンパナート, 鈴木恵友

精密工学会学術講演会講演論文集 ( 公益社団法人精密工学会 ) 2016S ( 0 ) 371 - 372 2016.01

Authorship：Last author Language：Japanese Publishing type：Research paper (other academic)

CMPでは，複数の加工材料に対して最適なスラリーやポリシングパッドを適用させる必要がある．これらの部材を最適化するためには，材料除去メカニズムに基づき，スラリー中微粒子の種類や微粒子径，材質，薬液を選定することが重要である．そこで本研究では，サファイア，SiO2などの複数の基板に対して動的光散乱法（DLS）を用いて微粒子径の変化について評価したので報告する．

DOI： 10.11522/pscjspe.2016s.0_371

Non-contact micro cutting tool diameter measurement using laser diffraction Reviewed

Khajornrungruang P., Kimura K., Suzuki H., Suzuki K.

Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century Lem 2015 2015.10

Study on dynamic observation method for fine particles during Chemical Mechanical Polishing using optical transparency micro-patterned pad Reviewed

Oniki T., Khajornrungruang P., Suzuki K.

Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century Lem 2015 2015.10

Non-Contact Micro Cutting Tool Diameter Measurement using Laser Diffraction Reviewed

Panart Khajornrungruang, Keiichi Kimura, Hiroshi Suzuki, Keisuke Suzuki

Proceedings of the 8th International Conference on Leading Edge Manufacturing in 21st Century (LEM21) Accepted 2015.10

Determination of Individual Sub 100 nm Nano-Particle Size inan Evanescent Field using Scattering Light Intensity Reviewed

Panart Khajornrungruang, Sevim Korkmaz, Angshuman Pal, Keisuke Suzuki, Keiichi Kimura, S. V. Babu

Advanced Metallization Conference 2015 2015.09

Study on evaluation method for polishing pad surface topography based on optical fourier transform Reviewed

Khajornrungruang P., Suzuki K., Kushida T., Tajiri T., Matsuo H., Mochizuki Y., Hiyama H., Kimura K.

ICPT 2014 - Proceedings of International Conference on Planarization/CMP Technology 2014 205 - 208 2015.01

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (international conference proceedings)

日本神戸 2014.11.19 - 2014.11.21

DOI： 10.1109/ICPT.2014.7017281

Other Link： http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6996093

2108 Study on dynamic observation method for fine particles during Chemical Mechanical Polishing using optical transparency micro-patterned pad Reviewed

2015 ( 0 ) _2108 - 1_-_2108-5_ 2015.01

1516 Non-Contact Micro Cutting Tool Diameter Measurement using Laser Diffraction Reviewed

2015 ( 0 ) _1516 - 1_-_1516-4_ 2015.01

Study on sub 50 nm sized particle dynamic observation in water using evanescent field with mobile apparatus Reviewed

73 - 77 2014.11

Study on dynamic observation of sub-50 nm sized particles in water using evanescent field with a compact and mobile apparatus Reviewed International journal

Khajornrungruang P., Dean P.J., Babu S.V.

Proceedings - ASPE 2014 Annual Meeting 73 - 77 2014.01

「寄書」見えない可視光

カチョーンルンルアン　パナート

Voice of CMP, No. 25 ( 精密工学会プラナリゼーションCMPとその応用技術専門委員会 ) 2013.12

Nano-Sized Particles Detection and Analysis in Solutions using Evanescent Field Invited

2013.09

Study on fine particles behavior in slurry flow between wafer and polishing pad as a material removal process in CMP Invited Reviewed

345 - 350 2013.01

高速加工における小径工具の高精度オンマシン計測

カチョーンルンルアン　パナート、木村景一、鈴木裕

機械技術 ( 日刊工業新聞社 ) 60 ( 7 ) 38 - 41 2012.07

Micro Tool Cutting Edge Profile Measurement using Laser Diffraction Method

Die and Mould Technology 27 ( 7 ) 124 2012.07

On-machine measurement of a distance between high speed rotation tool tip and workpiece by laser diffraction Reviewed

Panart Khajornrungruang, Keiichi Kimura, Keisuke Suzuki

251 - 254 2012.06

High precision tool cutting edge monitoring using laser diffraction for on-machine measurement Invited Reviewed International journal

Khajornrungruang P., Kimura K., Takaya Y., Suzuki K.

International Journal of Automation Technology 6 ( 2 ) 163 - 167 2012.03

High Precision Tool Cutting Edge Monitoring Using Laser Diffraction for On-Machine Measurement Reviewed

Panart Khajornrungruang, Keiichi Kimura, Yasuhiro Takaya, Keisuke Suzuki

International Journal of Automation Technology 6 ( 2 ) 163 - 167 2012.03

On-machine measurement of a distance between high speed rotation tool tip and workpiece by laser diffraction Reviewed

1 251 - 254 2012.01

Study on fine particle behavior in slurry flow between wafer and polishing pad as a material removal process in CMP Invited Reviewed

Kimura K., Suzuki K., Khajornrungruang P.

ICPT 2012 - International Conference on Planarization/CMP Technology, Proceedings 345 - 350 2012.01

Study on Sapphire CMP Slurry using Water-soluble Fullerenol as Fine Particles Reviewed

Keiichi Kimura,Panart Khajornrungruang,Eiichiro Okamoto

Proc of International Conference on Planarization/CMP Technology 287 - 292 2011.11

Spatial Fourier Transform Analysis of Polishing Pad Surface Topography Reviewed

2011.09

Performance of water-soluble fullerene as novel functional fine particles for sapphire CMP Reviewed

2011.09

Slurry Supplying Method for Large Quartz Glass Substrate Polishing Reviewed

Panart Khajornrungruang,Keiichi Kimura,Ryuji Yui,Nagisa Wada,Keisuke Suzuki

Japanese Journals of Applied Physics 50 ( 5 ) 2011.05

Investigation on slurry flow and temperature in polishing process of quartz glass substrate Invited Reviewed International journal

Khajornrungruang P., Wada N., Kimura K., Yui R., Suzuki K.

International Journal of Automation Technology 5 ( 2 ) 195 - 200 2011.03

Evaluation method applying Fourier transform analysis for conditioned polishing pad surface topography Invited Reviewed International journal

Kimura K., Khajornrungruang P., Okuzono T., Suzuki K.

International Journal of Automation Technology 5 ( 2 ) 173 - 178 2011.03

Evaluation Method Applying Fourier Transform Analysis for Conditioned Polishing Pad Surface Topography Reviewed

Keiichi Kimura,Panart Khajornrungruang,Takahisa Okuzono,Keisuke Suzuki

International Journal of Automation Technology 5 ( 2 ) 173 - 178 2011.03

Investigation on Slurry Flow and Temperature in Polishing Process of Quartz Glass Substrate Reviewed

Panart Khajornrungruang,Nagisa Wada,Keiichi Kimura,Ryuji Yui,Keisuke Suzuki

International Journal of Automation Technology 5 ( 2 ) 195 - 200 2011.03

Study on Sapphire Chemical Mechanical Polishing using mixed abrasive slurry with fullerenol Reviewed

294 - 295 2010.12

Investigation on slurry flow and temperature in polishing process of quartz glass substrate Reviewed

559 - 562 2010.12

Slurry supplying method for large quartz glass substrate polishing Reviewed

276 - 277 2010.12

Evaluation method for conditioned polishing pad surface topography applying Fourier transform analysis Reviewed

388 - 391 2010.12

Development of Orderly Micro Asperity on Polishing Pad Surface for Chemical Mechanical Polishing (CMP) Process using Anisotropic Etching Reviewed

Khajornrungruang P., Kimura K., Baba A., Yasuda K. and Tanaka A.

Asian International Journal of Science and Technology in Production and Manufacturing Engineering 3 ( 3 ) 29 - 34 2010.12

Study on Wafer and Polishing Pad Surface Contact with Stationary and Dynamic Behavior Reviewed

Keiichi Kimura,Panart Khajornrungruang,Eiichiro Okamoto

International Conference on Planarization/CMP Technology 2010.11

Development of Orderly Micro Asperity on Polishing Pad Surface for Chemical Mechanical Polishing (CMP) Process using Anisotropic Etching Reviewed

Khajornrungruang P.,Kimura K.,Baba A.,Yasuda K,Tanaka A.

Global Congress on Manufacturing and Management(GCMM2010) 253 - 258 2010.11

Investigation of Slurry Flow in Chemical Mechanical Polishing Process of the Quartz Glass Substrate used for Flat Panel Display Photomask Reviewed

Kimura K.,Khajornrungruang P.,Wada N.

Global Congress on Manufacturing and Management(GCMM2010) 2010.11

Study on Sapphire Chemical Mechanical Polishing using Mixed Abrasive Slurry with Fullerenol Reviewed

K. Suzuki,T. Saitou,T. Korezawa,P. Khajornrungruang,K. Kimura

Advanced Metallization Conference 2010 154 - 154 2010.10

Slurry Supplying Method for Large Quartz Glass Substrate Polishing Reviewed

P. Khajornrungruang,R. Yui,N. Wada,K. Suzuki,K. Kimura

Advanced Metallization Conference 2010 136 - 136 2010.10

Evaluation Method for Conditioned Polishing Pad Surface Topography applying Fourier Transform Analysis Reviewed

Keiichi KIMURA,Panart KHAJORNRUNGRUANG,Takahisa OKUZONO

International Symposium on Measurement and Quality Control 2010.09

Investigation on Slurry Flow and Temperature in Polishing Process of Quartz Glass Substrate Reviewed

Panart KHAJORNRUNGRUANG,Nagisa WADA,Ryuji YUI,Keiichi KIMURA

International Symposium on Measurement and Quality Control 2010.09

Development of Periodically Arrayed Micro Pyramid Asperity on Polishing Pad Surface for CMP process using Lithography Reviewed

Panart Khajornrungruang,Keiichi Kimura,Akiyoshi Baba,Naoaki Takahashi,Yuichi Hashiyama and Keisuke Yasuda

Asian Symposium for Precision Engineering and Nanotechnology 2009 (ASPEN 2009) 2009.11

Study on Material Removal Model in Oxide CMP process Reviewed

Yuuichi Hashiyama,Panart Khajornrungruang,Keiichi Kimura

Asian Symposium for Precision Engineering and Nanotechnology 2009 (ASPEN 2009) 2009.11

Cu-CMP Assisted with Ultra Violet Light Irradiation Directly to Wafer Surface Reviewed

Panart Khajornrungruang,Keiichi Kimura and Nobutaka Sumomogi

2009 International Conference on Planarization/CMP Technology (ICPT 2009) 247 - 251 2009.11

Development of Arrayed Micro Pattern on Polishing Pad Surface Applied with Anisotropic Etching Reviewed

Keisuke Yasuda,Keiichi Kimura,Akiyoshi Baba,Panart Khajornrungruang,Akiho Tanaka

2009 International Conference on Planarization/CMP Technology (ICPT 2009) 461 - 466 2009.11

Study on Slurry Flow in CMP Process for Large Quadrilateral Quartz Glass Substrate Reviewed

Nagisa Wada,Panart Khajornrungruang,Keiichi Kimura

2009 International Conference on Planarization/CMP Technology (ICPT 2009) 455 - 460 2009.11

Study of functionality of fine particles in slurry for oxide CMP process Reviewed

Yuuichi Hashiyama,Panart Khajornrungruang,Keiichi Kimura

2009 International Conference on Planarization/CMP Technology (ICPT 2009) 370 - 374 2009.11

Evaluation Method for Surface Topography of Conditioned Polishing Pad based on Fourier Transform Reviewed

Takahisa Okuzono,Panart Khajornrungruang,Yoshikazu Idei and Keiichi Kimura

2009 International Conference on Planarization/CMP Technology (ICPT 2009) 449 - 454 2009.11

角形石英ガラス研磨におけるスラリー流れに関する研究 Reviewed

橋山雄一，木村景一，カチョーンルンルアン・パナート

砥粒加工学会 53 ( 9 ) 578 - 582 2009.09

Study on slurry flow in quadrilateral silica glass polishing Reviewed

HASHIYAMA Yuuichi, KIMURA Keiichi, KHAJORNRUNGRUANG Panart

Journal of the Japan Society for Abrasive Technology 53 ( 9 ) 578 - 582 2009.09

Study on slurry flow in quadrilateral silica grass polishing Reviewed

HASHIYAMA Yuuichi, KIMURA Keiichi, KHAJORNRUNGRUANG Panart

Journal of the Japan Society for Abrasive Technology ( The Japan Society for Abrasive Technology ) 53 ( 9 ) 578 - 582 2009.01

Language：Japanese Publishing type：Research paper (scientific journal)

In liquid crystal display panel production, the silica glass photo mask in the photolithography process is becoming larger, and planarity improvement of the silica glass photo mask is required. Planarization of the mask surface requires polishing. However, the polishing of large-sized silica glass involves nonuniform slurry flow under the glass. In this study, we visualized the slurry flow in polishing of a square of silica glass to realize uniform slurry flow. Furthermore, we visualized the slurry flow with various grooved polishing pads and examined the slurry flow between the silica glass and pad surface.

DOI： 10.11420/jsat.53.578

Other Link： https://ci.nii.ac.jp/naid/130004494500

Study on CMP polishing characteristic with Ultraviolet light irradiation

Sumomogi Nobutaka, Kimura Keiichi, Panart Khajornrungruang

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2009 ( 0 ) 305 - 306 2009.01

Study on effects of ultraviolet irradiation in Cu-CMP:Observation and investigation of reactions during ultraviolet irradiation of Cu wafer

Murali Rao, Sumomogi Nobutaka, Kimura Keiichi, Khajornrungruang Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2009 ( 0 ) 1015 - 1016 2009.01

レーザー回折を用いた工具切れ刃位置のオンマシン計測の研究:2波長レーザによる測定精度向上への試み

吉廣俊志, 木村景一, KHAJORNRUNGRUANG PANART

精密工学会学術講演会講演論文集 ( 公益社団法人精密工学会 ) 2009 ( 0 ) 815 - 816 2009.01

Language：Japanese Publishing type：Research paper (other academic)

近年の工業製品の高度機能化に伴い，工作機械による加工精度のみならず，加工工具そのものの小型化及び高精度化，さらには機上での工具管理が重要な課題となっている．本研究では，レーザの回折現象を用いた非接触かつ高精度な工具測定方法及び小型で機上に搭載できる装置の研究開発を行っている．本稿では，波長の異なる2つのレーザ光を用い，2個の同時測定データから工具位置測定のさらなる高精度化を試みたので報告する．

DOI： 10.11522/pscjspe.2009S.0.815.0

Other Link： https://ci.nii.ac.jp/naid/130005029877

21107 Study on material removal model in CMP process : 3nd report-Investigation of material removal phenomenon with fine particle in slurry

Hashiyama Yuuichi, Kimura Keiichi, Khajornrungruang Panart

The Proceedings of Conference of Kanto Branch ( The Japan Society of Mechanical Engineers ) 2009 ( 0 ) 461 - 462 2009.01

Language：Japanese Publishing type：Research paper (other academic)

The material removal phenomenon in CMP process is not clarified yet. Therefore, the appropriate material removal model has not established. In this study, the interaction among wafer surface, polishing pad surface and fine particles in slurry was observed and material removal mechanism was investigated. In this report. the property of SiO_2 film in alkalinity solution was investigated with AFM indentation. In pH8.5 solution. SiO_2 film in KOH solution is softer than SiO_2 film in NH_4OH. In pH10 solution, a property of SiO_2 film in KOH solution is quite simillar to a property of SiO, film in NH_4OH solution. This fact suggests that in pH10 solution SiO_2 film changes soft film, the a chemical reaction layer in KOH solution is the same as a chemical layer solution in NH_4OH.

DOI： 10.1299/jsmekanto.2009.15.461

Other Link： https://ci.nii.ac.jp/naid/110007722430

S1303-1-4 On-Machine Tool Measurement Precision Improvement using dual wavelength laser diffraction

Khajornrungruang Panart, Kimura Keiichi, Yoshihiro Shunji

The proceedings of the JSME annual meeting ( The Japan Society of Mechanical Engineers ) 2009 ( 0 ) 273 - 274 2009.01

Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)

In these days, ultra precision, high complexity and high efficiency of fine-fabrication using cutting tool are required. Not only performance of machine tool but also downsizing of high accurate working tool itself has been an important issue to realize the requirements. In this study, on-machine tool measurement technology using laser diffraction which is able to manage micro tool and able to post in the machine tool has been establishing. In this article, the on-machine tool measurement device applying dual wavelength is developed. We use the developed tool measurement device, installable size for machining center, to evaluate fundamental measurement performance.

DOI： 10.1299/jsmemecjo.2009.4.0_273

Other Link： https://ci.nii.ac.jp/naid/110007861922

Study on CMP Micro Patterned Pad Fabricated by MEMS Technology(2nd Report)

Takahashi Naoaki, Kimura Keiiti, Khajornrungruang Panart, Yasuda Keisuke, Baba Akiyoshi

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2009 ( 0 ) 1027 - 1028 2009.01

H13 Study on observation methods for contact configuration between polishing pad and wafer under wet condition in CMP

Okamoto Eiichiro, Kimura Keiichi, Khajornrungruang Panart

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2009 ( 0 ) 247 - 248 2009.01

H12 Study on slurry flow in CMP process for large quadrilateral quartz glass substrate

Wada Nagisa, Kimura Keiichi, Khajomrungruang Panart

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2009 ( 0 ) 245 - 246 2009.01

H11 Polishing characteristic on Cu-CMP with Ultraviolet light irradiation

Sumomogi Nobutaka, Kimura Keiichi, Khajornrungruan Panart, Appalasamy Murari Rao

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2009 ( 0 ) 243 - 244 2009.01

Mechanical property of copper complexing film and interaction between SiO2 particle in slurry and the film

Imamura Akira, Kimura Keiichi, Panart Khajornrungruang, Hashiyama Yuichi, Hiyama Hirokuni, Mochizuki Yoshihiro

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2009 ( 0 ) 1021 - 1022 2009.01

Study on Temperature Rise at Wafer and Polishing pad surfacein Chemical Mechanical Polishing (2nd report)

Ueno Kazuki, Kimura Keiichi, Khajornrungruang Panart, Koi Yuto

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2009 ( 0 ) 1041 - 1042 2009.01

Cu-CMP with Ultraviolet Light Irradiation in Deionized Water Reviewed

Panart Khajornrungruang,Keiichi Kimura and Nobutaka Sumomogi

2008 International Conference on Planarization/CMP Technology (ICPT 2008) 120 - 124 2008.11

ヨーロッパ精密工学会第10回記念国際会議(euspen 2008)報告 Invited Reviewed

パナートカチョーンルンルアン

精密工学会誌 = Journal of the Japan Society of Precision Engineering ( 公益社団法人精密工学会 ) 74 ( 8 ) 2008.08

ヨーロッパ精密工学会第10回記念国際会議(euspen 2008)報告

パナートカチョーンルンルアン

精密工学会誌 ( 三美印刷株式会社 ) 78 ( 8 ) 810 2008.08

On-machine Tool Measurement of Tool Tip Position using Laser Diffraction Reviewed

Panart Khajornrungruang,Keiichi Kimura

International Conference of European Society for Precision Engineering and Nanotechnology (euspen2008) 2008.05

Study on material removal model in oxide CMP process

Hashiyama Yuuichi, Kimura Keiichi, Khajornrungruang Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2008 ( 0 ) 851 - 852 2008.01

Language：Japanese Publishing type：Research paper (other academic)

This study is focused on the material removal mechanism in chemical mechanical polishing (CMP) process. The material removal phenomena in CMP process has not been clarified yet. In this study, the interaction among wafer surface, polishing pad surface and fine particles in slurry was observed with AFM and material removal mechanism was investigated. Especially in this paper, we researched about the interaction between the oxide wafer surface and fine particles. The property of SiO2 film in solution and adhesive removal phenomena with a fine particle were investigated with AFM indentation. We propose novel materials removal model based on these experiments.

DOI： 10.11522/pscjspe.2008A.0.851.0

Other Link： https://ci.nii.ac.jp/naid/130004658870

Ultraviolet Light Irradiation Polishing for Cu-CMP (1st report):Ultraviolet Light Effect in Deionized Water

Khajornrungruang Panart, Kimura Keiichi, Sumomogi Nobutaka, Mori Chikara

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2008 ( 0 ) 835 - 836 2008.01

A study on film formation at Cu wafer surface in chemical solution

Imamura Akira, Kimura Keiichi, Khajornrungruang Panart, Hashiyama Yuichi, Sumiyoshi Hirohumi, Hiyama Hirokuni, Mochizuki Yoshihiro

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2008 ( 0 ) 201 - 202 2008.01

21415 A study on material removal model in CMP process : 2nd report-Investigation of material removal phenomenon using AFM

Hashiyama Yuuichi, Kimura Keiichi, Khajonrungruang Panart

The Proceedings of Conference of Kanto Branch ( The Japan Society of Mechanical Engineers ) 2008 ( 0 ) 409 - 410 2008.01

Language：Japanese Publishing type：Research paper (other academic)

The material removal phenomenon in CMP process is not clarified yet. Therefore, the appropriate material removal model has not established. In this study, the interaction among wafer surface, polishing pad surface and fine particles in slurry was observed and material removal mechanism was investigated. At first, the property of SiO_2 film in solution was investigated with AFM indentation. Next, the AFM tip after indentation was observed with SEM-EDX system. In pH7〜pH 10 solution, SiO_2 film changed to soft material, and small adherent which was SiO_2 was observed in pH7 solution. This fact suggests that fine particles in slurry adhere materials from SiO_2 film with chemical adherent force.

DOI： 10.1299/jsmekanto.2008.14.409

Other Link： https://ci.nii.ac.jp/naid/110007705394

On-machine tool measurement of tool tip position using laser diffraction Reviewed

Khajornrungruang P., Kimura K.

Proceedings of the 10th Anniversary International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2008 2 362 - 365 2008.01

Study on CMP Micro Patterned Pad Fabricated by MEMS Technology (1st Report):Fabrication of Micro Pyramid Pattern Pad

Takahashi Naoaki, Kimura Keiichi, Khajornrungruan Panart, Yasuda Keisuke, Baba Akiyoshi

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2008 ( 0 ) 843 - 844 2008.01

K14 Study of Fabricated Micro Pattern Pad using CMP MEMS Technology : Characteristic Evaluation of Micro Pattern Pad Surface

Takahashi Naoaki, Kimura Keiichi, Panart Khajornrungruan

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2008 ( 0 ) 355 - 356 2008.01

K13 Study on Temperature Change of Wafer and Polishing pad in Chemical Mechanical Polishing

Ueno Kazuki, Wada Nagisa, Kimura Keiichi, Panart Khajornrungruang

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2008 ( 0 ) 353 - 354 2008.01

K12 Influence on UV irradiation on to single crystal SiC. surface

Matsumoto Tadashi, Kimura Keiichi, Panart Khajornrungruang

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2008 ( 0 ) 351 - 352 2008.01

K11 Study on UV-Polishing of PCD using ArF Excimer Laser

Koutake Yoshihiro, Kimura Keiichi, Panart Khajornrungruang

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2008 ( 0 ) 349 - 350 2008.01

Contact between Polishing Pad and Wafer in Chemical Mechanical Polishing.

Sumomogi Nobutaka, Kimura Keiichi, Khajornrungruang Panart, Ueno Kazuki

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2008 ( 0 ) 183 - 184 2008.01

Study on Temperature rise at Wafer and Polishing pad surface in Chemical Mechanical Polishing (1st report)

Ueno Kazuki, Kimura Keiichi, Khajornrungruang Panart, Koi Yuto, Wada Nagisa

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2008 ( 0 ) 839 - 840 2008.01

A Computational Study on Slurry Flow between a Wafer and CMP Pad with Grooves Reviewed

Katsuya Nagayama, Hirofumi Morishita, Keiichi Kimura, Kazuhiro Tanaka, Panart Khajornrungruang and Yousuke Inatsu

TOWARDS SYNTHESIS OF MICRO-/NANO-SYSTEMS 277 - 280 2007.10

Study on Material Removal Phenomena in CMP Process Reviewed

2007.10

高精度金型加工のためのオンマシンマイクロ工具計測

パナート・カチョーンルンルアン

型技術 ( 日刊工業新聞社 ) 22 ( 9 ) 25 - 29 2007.08

Study on Polishing Characteristics in High Temperature Chemical Mechanical Polishing for SiC Ceramics Reviewed

Panart Khajornrungruang,Hidenori Matano,Tadashi Matsumoto and Keiichi Kimura

International Journal for Manufacturing Science and Technology 9 ( 1 ) 29 - 34 2007.06

Study on Material Removal Phenomena in CMP Process Reviewed

Keiichi Kimura,Yuichi Hashiyama,Panart Khajornrungruang,Hirokuni Hiyama and Yoshihiro Mochizuki

2007 International Conference on Planarization/CMP Technology (ICPT 2007) 2007.04

Development of On-machine Micro Tool Measurement Device using Laser Diffraction

Khajornrung-ruang Panart, Kimura Keiichi, Miyoshi Takashi, Takaya Yasuhiro, Ueda Masahiro

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2007 ( 0 ) 305 - 306 2007.01

Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)

According to advanced functionality in a wide variety of equipments in these days, ultra precision, high complexity and high efficiency of fine-fabrications are required. Not only performance of machining center but also downsizing of cutting tool and the on-machine tool measurement have been an important issue to realize these fabrications. In this article, on-machine tool measurement technique using laser diffraction, which is applicable for on-machine measurement has been establishing and developing. The developed on-machine measurement device dimension is 150 mm×200 mm×135 mm, installable into machining center. Next, tool measuring experiments are carried out in order to evaluate tool-measurement performance of the developed device. Experimental results imply the measurement uncertainty(2σ) is less than 100 nm and the tool tip displacement error is less than 200 nm. Hence, it is considered that the measurement precision of the developed on-machine device is sufficient for tool measurement inside the next generation of machining center.

DOI： 10.11522/pscjspe.2007S.0.305.0

Other Link： https://ci.nii.ac.jp/naid/130005028443

H44 Influence on UV irradiation on to single crystal SiC

Matsumoto Tadashi, Kimura Keiichi, Khajornrungruang Panart

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2007 ( 0 ) 301 - 302 2007.01

H43 Study on Ultraviolet irradiation polishing for Cu-CMP

Kuzuma Hayato, Kimura Keiichi, Khajornrungruang Panart

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2007 ( 0 ) 299 - 300 2007.01

H42 CMPにおけるスラリーフロー可視化に関する研究 : ポリシングパッド溝パターン設計の指針(H4 加工・生産システム4(CMPとその応用))

稲津陽介, 木村景一, カチョーンルンルアンパナート, 松永健助

日本機械学会九州支部講演論文集 ( 一般社団法人日本機械学会 ) 2007 ( 0 ) 297 - 298 2007.01

Language：Japanese Publishing type：Research paper (other academic)

CMPにおいてポリシングパッド-ウェハ聞のスラリーの迅速な供給・排出およびポリシングパッド-ウェハ間のスラリーの流量分布が研磨特性に重大な影響を与える.ポリシングパッド-ウェハ間のスラリーフローの制御を行うため,ポリシングパッド上に形成する溝パターンの適切な設計方法が重要となる.本報告では同心円状溝パターン,放射状溝パターンの溝寸法を変化させて,ポリシングパッド-石英ガラス問のスラリーフロー可視化実験を行い,パッド溝パターン設計法の指針について考察した.

DOI： 10.1299/jsmekyushu.2007.60.297

Other Link： https://ci.nii.ac.jp/naid/110007112971

H41 Fundamental Study on High Temperature Chemical Mechanical Polishing for SiC Ceramics

MATANO Hidenori, KIMURA Keiichi, KHAJORNRUNGRUANG Panart

The Proceedings of Conference of Kyushu Branch ( The Japan Society of Mechanical Engineers ) 2007 ( 0 ) 295 - 296 2007.01

21711 A study on material removal model in CMP process

Hashiyama Yuuichi, Kimura Keiichi, Khajomrungruang Panart

The Proceedings of Conference of Kanto Branch ( The Japan Society of Mechanical Engineers ) 2007 ( 0 ) 237 - 238 2007.01

Language：Japanese Publishing type：Research paper (other academic)

The material removal mechanism on Chemical Mechanical Polishing is not clarified yet. Accordingly, it is difficult to build up a systematic CMP process simulation system. In order to develop CMP process simulation system, it is necessary to establish "material removal model" among wafer surface, polishing pad surface and fine particles in slurry. In the study, we are proposing material removal model for SiO_2 layer. Chemical adsorption between fine particles and wafer and between fine particles and polishing pad is an important factor for the material removal mechanism.

DOI： 10.1299/jsmekanto.2007.13.237

Other Link： https://ci.nii.ac.jp/naid/110007083467

Study on groove pattern layout for slurry flow control in CMP process Reviewed International journal

Kimura K., Nagayama K., Morishita H., Inatsu Y., Khajornrungruang P.

Advanced Metallization Conference (AMC) 2006 571 - 576 2006.12

A lodestar on pad groove pattern design with slurry flow analysis and visualization experiments in CMP process Reviewed

K. Kimura,K. Nagayama,Y. Inatsu,P. Khajornrungruang

2006 International Conference on Planarization/CMP Technology (2006 ICPT) 2006.10

Study on groove pattern layout for slurry flow control in CMP process Reviewed

K. Kimura,K. Nagayama,H. Morishita,Y. Inatsu,P. Khajornrungruang

Advanced Metallization Conference 2006 (ADMETA 2006) ( CMP 5-16 ) 2006.09

A Computational Study on Slurry Flow between a Wafer and CMP Pad with Grooves Reviewed

Katsuya Nagayama,Hirofumi Morishita,Keiichi Kimura,Kazuhiro Tanaka,Panart Khajornrungruang,Yousuke Inatsu

The 11th International Conference on Precision Engineering (ICPE) 277 - 280 2006.09

小径工具切れ刃プロファイルの光回折オンマシン計測に関する研究（第2報，極小径工具(φ300μm)摩耗の測定評価） Reviewed

カチョーンルンルアン　パナート，三好隆志，木村景一，高谷裕浩，原田孝，砂金総一郎

日本機械学会論文集（C編） 72 ( 718 ) 1730 - 1737 2006.06

On-Machine Cutting Edge Profile Measurement for Micro Milling Tool (2nd Report, Micro Endmill (.PHI.300.MU.m) Wear Measurement and Evaluation):2nd Report, Micro Endmill (φ300μm) Wear Measurement and Evaluation Reviewed

KHAJORNRUNGRUANG Panart, MIYOSHI Takashi, TAKAYA Yasuhiro, HARADA Takashi, ISAGO Soichiro

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C ( The Japan Society of Mechanical Engineers ) 72 ( 6 ) 1730 - 1737 2006.06

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

The extremely precise level of cutting work's demand has been increasing, recently. Therefore, the establishment of a supreme measurement technology for micro endmills during operating on ultra-precision machining center plays an important role in many micro fabrication industries. The “Diffraction Gauge Method”, a novel measuring technique based on far-field laser diffraction, has been proposed to measure cutting-edge profiles of micro tools (φ<500μm) with repeatability of better than 100 nm even though on-machine surroundings. In this paper, cutting-edge profile measurement of worn micro endmills (φ300μm), which operated side-milling on graphite work material, is carried out. Agreement of the measured profiles with SEM image confirms the high accuracy of the measurement technique. Subsequently, the tool wear evaluations in various cutting lengths of micro endmills before and after cutting notify the relationship between increase in tool wears and cutting length. These experimental results verify the validity of our novel micro endmill measurement technique, which can be applied into ultra-precision machining center in the near future.

DOI： 10.1299/kikaic.72.1730

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33748329393&origin=inward

Study on Polishing Characteristics in High Temperature Chemical Mechanical Polishing for SiC Ceramics (Selected paper) Reviewed

Panart Khajornrungruang,Hidenori Matano,Tadashi Matsumoto and Keiichi Kimura

2006 International Conference on Micro/Nano Fabrication Technologies MNPX ( 12 ) 1 - 6 2006.05

Study on UV irradiation CMP process

Kuzuma Hayato, Fukuda Jyunya, Kimura Keiiti, Khajornrungruang Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2006 ( 0 ) 523 - 524 2006.01

Micro Endmill Cutting–edge Profile Measurement for On–machine Monitoring using Laser Diffraction

Khajornrungruang Panart, Kimura Keiichi, Miyoshi Takashi, Takaya Yasuhiro

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2006 ( 0 ) 1103 - 1104 2006.01

Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)

Recently, much more micro–shaped milling work, such as die/mold and parts machining, with supreme precision has been required. Therefore, establishment of the high precision measurement technology for tool cutting–edge profile during operation is indispensable. The aim of our study is to develop a measurement technique, which is based on the far–field laser diffraction, in order to evaluate cutting–edge profiles of micro endmill as sub–micrometer precision. In addition, the technique is applicable for on–machine measurement due to simplicity and long working distance of the optical system. In this article, the measurements of poly–crystalline diamond (PCD) micro endmill diameters are curried out. The measured results show the validity of measurement method and the measurement repeatability.

DOI： 10.11522/pscjspe.2006S.0.1103.0

Other Link： https://ci.nii.ac.jp/naid/130005027134

20102 An attempt on polishing pad surface modeling in Chemical Mechanical Polishing

Hashiyama Yuuichi, Kimura Keiichi, Panart Khajomrungruang

The Proceedings of Conference of Kanto Branch ( The Japan Society of Mechanical Engineers ) 2006 ( 0 ) 25 - 26 2006.01

Language：Japanese Publishing type：Research paper (other academic)

The material removal mechanism of Chemical Mechanical Polishing has a lot of unidentified aspects which are not yet clarified. Moreover, it is very difficult to build up the systematic simulation system on the mechanism. It is indispensable to model the contact mechanism among abrasive particles, surface of wafer and surface of polishing pad in order to construct a simulation system in CMP. However, the conventional modeling of polishing pad surface is not appropriate for the simulation. In this research, by observing the surface of the polishing pad, a model of the polishing pad surface was proposed. Further, the relationship was considered between the surface structure of polishing pad and material removal mechanism.

DOI： 10.1299/jsmekanto.2006.12.25

Other Link： https://ci.nii.ac.jp/naid/110006638491

Study on Chemical Mechanical Polishing for SiC Ceramics

Matano Hidenori, Kimura Keiiti, Khajornrungruang Panart, Matumoto Tadashi

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2006 ( 0 ) 559 - 560 2006.01

Study on slurry flow visualization in CMP process

Inatu Yousuke, Koutake Yoshihiro, Kimura Keiiti, Khajornrungruang Panart

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2006 ( 0 ) 537 - 538 2006.01

316 Development of On-machine Micro Tool Measurement Device using Laser Diffraction : Fundamental Characteristics of Measurement Device

KHAJORNRUNGRUANG Panart, Kimura Keiichi, MIYOSHI Takashi, TAKAYA Yasuhiro, Ueda Masahiro

The Proceedings of The Manufacturing & Machine Tool Conference ( The Japan Society of Mechanical Engineers ) 2006 ( 0 ) 131 - 132 2006.01

Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)

According to advanced functionality in a wide variety of equipments in these days, ultra precision, high complexity and high efficiency of fine-fabrication is required. Not only performance of machine tool but also downsizing of high accurate working tool itself has been an important issue to realize above conditions. In this study, on-machine tool measurement technology using laser diffraction which is able to manage micro tool and able to post in the machine tool has been establishing. In this article, the on-machine tool measurement device is developed. The developed on-machine device is carried out a response measurement experiment of hundreds nano-displacement using piezo stage then the fundamental characteristics of the developed measurement device is verified.

DOI： 10.1299/jsmemmt.2006.6.131

Other Link： https://ci.nii.ac.jp/naid/110006638933

On-machine tool measurement for cutting-edge profile of micro endmill using laser diffraction Reviewed

Khajornrungruang P., Miyoshi T., Takaya Y., Harada T., Isago S.

LEM 2005 - 3rd International Conference on Leading Edge Manufacturing in 21st Century 351 - 356 2005.12

On-Machine Tool Measurement for Cutting-Edge Profile of Micro Endmill using Laser Diffraction Reviewed

P. Khajornrungruang,T. Miyoshi,Y. Takaya,T. Harada and S. Isago

Proceedings of International Conference on Leading Edge Manufacturing in 21st Century (LEM21) ( 05-204 ) 351 - 356 2005.10

Study on chemical mechanical polishing for SiC ceramics

Kimura Keiichi, Kahjornrungruang Panart, Matano Hidenori, Matsumoto Tadashi

Proceedings of JSPE Semestrial Meeting ( The Japan Society for Precision Engineering ) 2005 ( 0 ) 335 - 336 2005.01

Language：Japanese Publishing type：Research paper (other academic)

SiC ceramics have broad application area due to its high temperarture strength, high heat conductivity and chemical stability. Recently, not only sintered but single crystal SiC are developed and it is expected the application for glass lens mold die material and semicondictor base plate. For the applications, it is required to develop important technology for obtaining defect free surfaces and reasonable cost for finishing. CMP process, as forming chemical reaction layer on material surface and remove, is considered to fulfill the requirements. In the report, polishing in high temperature is tried on SiC polishing to achieve the requirements.

DOI： 10.11522/pscjspe.2005A.0.335.0

Other Link： https://ci.nii.ac.jp/naid/130004656915

2624 3D Cutting edge profile measurement of micro endmill by means of laser diffraction gauge method

TAKAYA Yasuhiro, KHAJORNRUNGRUANG Panart, HAYASHI Terutake, MIYOSHI Takashi

The proceedings of the JSME annual meeting ( The Japan Society of Mechanical Engineers ) 2005 ( 0 ) 85 - 86 2005.01

Language：Japanese Publishing type：Research paper (other academic)

The aim of this study is to develop a new measuring technique bsed on laser diffraction such as Fraunhofer diffraction theory which is called the diffraction gauge method. This method makes it possible to evaluate a three-dimensional cutting-edge profile of a micro-endmill with precision of better than 100nm even though on-machine measurement. The measurement resolution was experimentally achived to be 15nm for a helical endmill and repeatability of ±50nm with valid accuracy for new tool. In this paper, in order to verify that the diffraction gauge method is of practical use such as on-machine measurement, the three-dimensional cutting edge profile measurements of a worn tool with the diameter of 0.3mm, which has performed side milling on graphite with 40000 rpm rotational speed, is discussed. The experimantal results show that the diffraction gauge method has enough high performance to be able to evaluate wear quantity of a worn micro endmill.

DOI： 10.1299/jsmemecjo.2005.4.0_85

Other Link： https://ci.nii.ac.jp/naid/110006190914

小径工具切れ刃プロファイルの光回折オンマシン計測に関する研究（第１報，光回折ゲージ法の提案とその検証実験） Reviewed

Panart KHAJORNRUNGRUANG、三好隆志、高谷裕浩、原田孝、砂金総一郎

日本機械学会論文集（C編） 70 ( 700 ) 3556 - 3563 2004.12

On-machine cutting edge profile measurement for micro milling tool (1st report, laser diffraction gauge method and its verifications) Reviewed

Khajornrungruang P., Miyoshi T., Takaya Y., Harada T., Isago S.

Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C 70 ( 12 ) 3556 - 3563 2004.12

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

A new optical measuring method of cutting edge profiles with a few nanometerresolutions for micro milling tool is proposed. The edge profile is scaled by the width between the first order maxima in a diffraction pattern, which relates to the spacing of a slit-type aperture formed between a reference knife-edge and a tool cutting-edge. The technique is applicable for on-machine measurement due to simplicity and long working distance of the optical system. In this paper, first, the theoretical analysis reveals the measurement resolution, and then the proposal of laser diffraction gauge method is mentioned. Next, the calibratability and the practicability of our technique are affirmed with fundamental experiments. Furthermore, experimental verifications are carried out for commercial tools such as straight-flute and helical-flute of micro endmills. Subsequently, excellent agreement of the profiles, which are measured with our developed experimental systems, with an image from scanning ion microscope verifies that the proposed method is efficient to accurately measure cutting-edge profiles.

DOI： 10.1299/kikaic.70.3556