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Synaptic device that operates by compressing a molecule

Research Project

Project/Area Number 17H02789
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Thin film/Surface and interfacial physical properties
Research InstitutionWaseda University

Principal Investigator

HASEGAWA Tsuyoshi  早稲田大学, 理工学術院, 教授 (50354345)

Co-Investigator(Kenkyū-buntansha) 松本 卓也  大阪大学, 理学研究科, 教授 (50229556)
田中 啓文  九州工業大学, 大学院生命体工学研究科, 教授 (90373191)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2019: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Keywordsシナプス動作素子 / 脳型情報処理 / 走査型トンネル顕微鏡 / 固体電気化学反応
Outline of Final Research Achievements

Synaptic devices that operate with a wider range of analog resistance changes are required to improve the performance of Deep Learning systems. In this study, we proposed a new type of a synaptic device that operates by compression of a molecule, which causes a change in electronic states of the molecule. We demonstrated the operation, which is consistent with the theoretical prediction. We also proposed a new method to compress a molecule, in which only a bias application to the two electrodes that sandwich a molecule is needed. The method that utilizes an electrochemical reaction will enable a future integration of the developed device.

Academic Significance and Societal Importance of the Research Achievements

近年、人工知能に大きな注目が集まっている。現在の人工知能の多くは、既存のコンピューターとソフトウエアの組み合わせで動いている。より高度な情報処理を省エネルギーで実現するためには、脳型情報処理に適したコンピューターの開発が不可欠であり、その主要構成要素であるシナプス動作素子の研究が世界中で盛んに行われている。本研究では、新しく見いだした物理化学現象をシナプス動作に利用することで、基礎的な知見の集積による学術への貢献、ならびに、上記社会的要請に応えることを目指した。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (21 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (2 results) Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results) Presentation (14 results) (of which Int'l Joint Research: 9 results,  Invited: 1 results)

  • [Int'l Joint Research] CNRS(フランス)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] CNRS(フランス)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Stable analog resistance change of a molecular-gap atomic switch over a wide range2020

    • Author(s)
      Kassai Ai、Hasegawa Tsuyoshi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SI Pages: SIIF01-SIIF01

    • DOI

      10.35848/1347-4065/ab7f59

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reliable operation of a molecular-gap atomic switch in a vacuum achieved by covering with an ionic liquid2020

    • Author(s)
      Arima Chisato、Naitoh Yasuhisa、Shima Hisashi、Akinaga Hiroyuki、Hasegawa Tsuyoshi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SI Pages: SIIF04-SIIF04

    • DOI

      10.35848/1347-4065/ab80a1

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of a metal oxide-based molecular-gap atomic switch for unconventional computing2020

    • Author(s)
      Araki Masato、Hasegawa Tsuyoshi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: 4 Pages: 040605-040605

    • DOI

      10.35848/1347-4065/ab8026

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Formation and dissolution of conductive channels in an Ag2S-islands network2020

    • Author(s)
      Ojima Keita、Hasegawa Tsuyoshi、Naitoh Yasuhisa、Shima Hisashi、Akinaga Hiroyuki
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SN Pages: SN1011-SN1011

    • DOI

      10.35848/1347-4065/ab922d

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A nano-mechanical device using a Ag2S-C60 system2019

    • Author(s)
      Ishikawa Yuya、Hasegawa Tsuyoshi、Joachim Christian
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 58 Issue: SD Pages: SDDF02-SDDF02

    • DOI

      10.7567/1347-4065/ab0499

    • NAID

      210000155869

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] STM探針を用いたC60分子圧縮とそれに伴う電子状態変化2020

    • Author(s)
      中島基晴、長谷川剛
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Reliable operation of a molecular-gap atomic switch in vacuum achieved by covering with an ionic liquid2019

    • Author(s)
      有馬知里、内藤泰久、島久、秋永広幸、長谷川剛
    • Organizer
      MNC-2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Diffusion barrier height-controlled reduction of an operating bias of a Ag/Ta2O5/Pt gapless-type atomic switch2019

    • Author(s)
      三上舞子、棚橋直哉、鶴岡徹、長谷川剛
    • Organizer
      MNC-2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Stable analog resistance change over a wide range achieved by a molecular-gap atomic switch2019

    • Author(s)
      葛西亜衣、長谷川剛
    • Organizer
      MNC-2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Control of analog change in resistance and its characteristics using atomic switches2019

    • Author(s)
      長谷川剛、鈴木彩菜、鶴岡徹
    • Organizer
      MNC-2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Ag2S-island network for reservoir computing studied by C-AFM2019

    • Author(s)
      尾島慶太、長谷川剛、内藤泰久、秋永広幸
    • Organizer
      ICSPM27
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Control of precipitation and dissolution of Ag atoms on a Ta2O5/Ag nanodot2019

    • Author(s)
      平谷航、長谷川剛
    • Organizer
      ICSPM27
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Measurement of change in resistance of a silver sulfide nanodot by removal of dopant silver atoms2019

    • Author(s)
      三島望実、長谷川剛
    • Organizer
      ICSPM27
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Compression of a C60 molecule by a Ag2S STM tip(Ag2S探針から析出したAg原子によるC60分子圧縮)2018

    • Author(s)
      石川裕也、長谷川剛、ヨアヒムクリスチャン
    • Organizer
      ACSIN-14
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nanomechanical device using a Ag2S-C60 system2018

    • Author(s)
      石川裕也、長谷川剛、ヨアヒムクリスチャン
    • Organizer
      MNC 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 分子膜ギャップ型原子スイッチのコンダクタンス保持率の研究2018

    • Author(s)
      鈴木彩菜、鶴岡徹、長谷川剛
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 銀原子析出に伴う硫化銀ナノドットの抵抗変化測定2018

    • Author(s)
      三島望実、島貴明、長谷川剛
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 金属酸化物ナノドットからの銀原子析出制御2018

    • Author(s)
      平谷航、長谷川剛
    • Organizer
      第65回応用物理学会春季学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Ag2S探針から析出したAg原子によるC60分子圧縮とその伝導度変化2017

    • Author(s)
      石川裕也、長谷川剛、ヨアヒムクリスチャン
    • Organizer
      第78回応用物理学会秋季学術講演会
    • Related Report
      2017 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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