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Four terminal memristor devices for correlation-based synaptic signal transduction

Research Project

Project/Area Number 25600098
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Thin film/Surface and interfacial physical properties
Research InstitutionOsaka University

Principal Investigator

Sakai Akira  大阪大学, 基礎工学研究科, 教授 (20314031)

Co-Investigator(Renkei-kenkyūsha) TAKEUCHI Shotaro  大阪大学, 大学院基礎工学研究科, 助教 (70569384)
Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsメムリスタ / 酸素空孔 / 転位 / 抵抗スイッチング / シナプス / 単結晶 / 金属酸化物 / 4端子 / メモリスタ / 還元 / 抵抗変化 / フィラメント / フォーミング / 透過電子顕微鏡 / 集束イオンビーム加工 / 電子線リソグラフィー / 直接接合基板 / 電流‐電圧特性 / ヒステリシス
Outline of Final Research Achievements

We have developed underlying technology of a correlation-based signal transduction synaptic device that mimics high-order functions of biological synapses and demonstrated basic operation of the devices fabricated on reduced SrTiO3 and TiO2 single crystal substrates. A highly-ordered two dimensional screw dislocation network formed by the wafer-bonding technique of SrTiO3 crystals is found to act as a preferential field of oxygen vacancy drift that induces abrupt resistive switching phenomena with high stability. A planer four terminal memristor device fabricated on reduced TiO2 has also been developed. In this device, the resistivity between two driving electrodes can successfully be changed plastically and reversibly by applying electric field from other terminal electrodes. These obtained results open the way to control the behavior of signal transduction in next-generation synaptic devices based on the modification of oxygen vacancy distribution in metal oxide crystals.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (2 results)

All 2016 2015

All Presentation (2 results)

  • [Presentation] ルチル型TiO2単結晶の酸素空孔分布制御と抵抗変化特性2016

    • Author(s)
      下谷将人、竹内正太郎、酒井朗
    • Organizer
      第63回応用物理学会春季学術講演会
    • Place of Presentation
      東京工業大学(東京都目黒区)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] ルチル型TiO2単結晶の抵抗変化特性と結晶構造変化2015

    • Author(s)
      下谷将人、村上弘弥、竹内正太郎、酒井朗
    • Organizer
      第76回応用物理学会秋季学術講演会
    • Place of Presentation
      名古屋国際会議場(愛知県名古屋市)
    • Year and Date
      2015-09-13
    • Related Report
      2015 Annual Research Report

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Published: 2014-07-25   Modified: 2019-07-29  

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