TANAKA Hirofumi





2-4 Hibikino, Wakamatsu-ku, Kitakyushu-shi, Fukuoka

Research Fields, Keywords

brain device, carbon nanotube, graphene nanoribbon


E-mail address





Degree 【 display / non-display

  • Osaka University -  Doctor of Engineering  1999.03

Biography in Kyutech 【 display / non-display

  • 2014.04

    Kyushu Institute of TechnologyGraduate School of Life Science and Systems Engineering   Department of Human Intelligence Systems   Professor  

Biography before Kyutech 【 display / non-display

  • 2008.04

      Assistant Professor   JAPAN

  • 2007.04

      Assistant Professor   JAPAN

  • 2003.10

      Research Assistant   JAPAN

  • 1998.04

      Special researcher of the Japan Society for the Promotion of Science   JAPAN

Academic Society Memberships 【 display / non-display

  • 2016.04


Specialized Field (scientific research fund) 【 display / non-display

  • Nanomaterials chemistry


Publications (Article) 【 display / non-display

  • 単層カーボンナノチューブとポリ酸による ニューロモルフィックランダムネットワークデバイス(招待)

    田中啓文, 赤井恵, 浅井哲也, 小川琢治

    電子情報通信学会誌      2020.01  [Refereed]  [Invited]

  • Three site molecular orbital controlled single-molecule rectifiers based on perpendicularly linked porphyrin-imide dyads

    Handayani M., Tanaka H., Katayose S., Ohto T., Chen Z., Yamada R., Tada H., Ogawa T.

    Nanoscale    11 ( 47 ) 22724 - 22729   2019.12  [Refereed]

     View Summary

    The original single-molecule rectifier proposed by Aviram and Ratner is based on a donor-σ-acceptor structure, in which σ functions as the insulator to disconnect the π electronic systems of the two parts. However, there have been no reports on experimentally demonstrated highly efficient single-molecule rectifiers based on this mechanism. In this paper, we demonstrate single-molecule rectifiers with perpendicularly connected metal porphyrin-imide dyads. Our proposed molecule rectifiers use hydroxyl groups at both ends as weak anchoring groups. Measurements of the single-molecule current-voltage characteristics of these molecules clearly show that the rectification ratio reached a high value of 14 on average. Moreover, the ratio could be tuned by changing the central metal in the porphyrin core. All of these features can be explained by the energy-level shift of the molecular orbital using a model with three electronic parts.

    DOI Scopus

  • Controllable synthesis of MoS2/graphene low-dimensional nanocomposites and their electrical properties

    L.-N. Long, P.-T. Thi, P.-T. Kien, P.-T., Trung, M. Ohtani, Y. Kumabe, H. Tanaka, S. Ueda, H. Lee, P.-B. Thang, T.-V. Khai

    Appl. Surf. Sci.      2019.10  [Refereed]


  • Three Sites Molecular Orbital Controlled Single-Molecule Rectifier based on Perpendicularly Linked Porphyrin-Imide Dyads

    M. Handayani, H. Tanaka, S. Katayose, T. Ohto, Z. Chen, R. Yamada, H. Tada, T. Ogawa

    Nanoscale      2019.10  [Refereed]

  • Effect of Synthesis Procedure on the Size of Ag/Ag<inf>2</inf>S Core-Shell Nanoparticles for Memristive Brain-Like Devices

    Nakao Y., Oradee S., Tukiman H., Tanaka H.

    Proceedings of the 2019 IEEE Regional Symposium on Micro and Nanoelectronics, RSM 2019      79 - 82   2019.08  [Refereed]

     View Summary

    © 2019 IEEE. For several decades, 'von Neumann' computers have been downsized while their performances have been improved. However, the downsizing has reached its limit, imposed by the tunneling effect in the transistor, which also prevents energy consumption. To overcome such limitations, neuromorphic devices have been proposed, which exhibit high performances with significantly low power consumption. In this study, we realize a neuromorphic device based on Ag/Ag2S nanoparticles, which have a switching behavior and allow the easy fabrication of a random network for reservoir computing. We start by fabricating particles with a desired particle size distribution. The amount of allylmercaptan (AM), which is a source of sulfur, was varied in the synthesis stage, and the obtained particles sizes were compared. By changing the concentration of AM, the sizes of Ag/Ag2S core-shell nanoparticles were successfully controlled, which allow us to achieve reservoir computing by aggregation of the particles.

    DOI Scopus

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Conference Prsentations (Oral, Poster) 【 display / non-display

  • Adsorption of graphene nanoribbons on substrates with vaccume molecule spray

    Ando Saeko, Inamni Eiichi, Tanaka Hirohumi, Yamada Toyokazu

    Abstract of annual meeting of the Surface Science of Japan  2017.01  -  2017.01 


  • Neuron-like signal generation and its chaotic analysis of single-walled carbon nanotube and nanoparticle complex

    International Congress on Scanning Probe Microscopy  2014.12  -  2014.12 

  • Fabrication of nanogap electrodes by molecular ruler method

    2014.11  -  2014.11 

  • カーボンナノチューブネットワークを用いた脳型デバイス


    ナノカーボンバイオセンサーの医療応用研究会  2014.10  -  2014.10 

  • Electric properties of single-walled carbon nanotube and nanoparticle complex for neuron-like signal generation

    H. Tanaka

    Seminar of Materals and Metallurgy2014  2014.10  -  2014.10  LIPI

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Lectures 【 display / non-display

  • Application of nanomaterials for neuromorphic processing

    International workshop on Bioiontronics, ISIPS2019   2019.11.22 

  • Neuromorphic pulse generation from SWNT/POM random network for next generation computer

    MNC-2019   2019.10.29  Japanese Society of Applied Physics

  • Neuromorphic pulse generation from SWNT/POM random network for next generation computer

    ISAS-2019 ( Ho Chi Minh City University of Technology )  2019.10.18  Ho Chi Minh City University of Technology

  • Neuromorphic pulse generation from SWNT/POM random network

    JCC-2019   2019.09.10  Indonesia Chemical Scociety

  • Neuromorphic pulse generation from SWNT/POM random network

    MRS-Thailand 2019 ( Pattaya )  2019.07.11  MRS-Thailand

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Career of Research abroad 【 display / non-display

  • Measurement of magnetic properties of graphene nanoribbon/organic molecule nanocomplex

    Fudan University  Project Year:  2011.10.22  -  2011.12.22

  • Fabrication of graphene /organic molecular nanocomplex

    Rice University  Project Year:  2011.01.25  -  2011.04.10