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Liquid-state optoelectronics

Research Project

Project/Area Number 19K21942
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 20:Mechanical dynamics, robotics, and related fields
Research InstitutionYokohama National University

Principal Investigator

Ota Hiroki  横浜国立大学, 大学院工学研究院, 准教授 (30528435)

Co-Investigator(Kenkyū-buntansha) 上野 和英  横浜国立大学, 大学院工学研究院, 准教授 (30637377)
Project Period (FY) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords液体金属 / 光エレクトロニクス / ストレッチャブルデバイス
Outline of Research at the Start

先進フレキシブル・ストレッチャブル(伸縮可能な)センサの一つとして液体金属とセンシングのためのイオン液体をからなるリキッドステート(Liquid state:LS)デバイスが提案されている。これは、従来のストレッチャブルセンサの欠点である感度と大変形の両立するデバイスである。しかし、これらセンサからシステムに昇華されるために必要な光エレクトロニクスに関するLSデバイスは実現していない。そこで本研究は光センサ・メモリに電気化学という新たな方法論を提案し、LS光デバイスを実現する。

Outline of Final Research Achievements

Liquid-state electronics utilizing functional liquids confined in soft templates as the sensing and actuating component present the ideal platform for enabling conformal coverage of electronic systems on curved and soft surfaces. However, to date, optoelectronic devices based on functional liquid materials as represented by photodetectors and optical memories still have not been proposed; this advancement is crucial to scaling up current liquid-state devices to a system level. Here, this study proposes optoelectronic devices based on liquid metal and photo-switchable ionic liquid with liquid-liquid heterojunction technology. The sensing and memory schemes we present are generic for different liquid-state devices, enabling different functionality to be added to the liquid-state electronics. As a proof of concept, we demonstrate a light sensor composed of the ionic liquid, and an optical memory using a composite of the ionic liquid and polypropylene glycol.

Academic Significance and Societal Importance of the Research Achievements

本研究の光エレクトロニクスは、従来の半導体材料に代わり液体材料を用いて電気化学的手法で実現する。本研究は新次元の柔軟性をもつ液体エレクトロニクスをシステムレベルまで昇華させるために重要な要素技術である。ゆえに当該分野の研究発展に大きな貢献をすることは明白である。特に、ウェアラブルデバイス、ロボティクスなど他分野でも液体金属デバイスの特性・高柔軟性を利用できる。学術的には液体エレクトロニクスに”光”という新たな物理対象を加えることができる。例えば液体金属表面にある極薄の酸化膜は自己修復機能を有する。そのため光制御を行うことで自己修復材料分野への学術的波及効果を期待することができる

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2021 2020 2019

All Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Journal Article] Transformable Electrocardiograph Using Robust Liquid?Solid Heteroconnector2021

    • Author(s)
      Takaya Maika、Matsuda Ryosuke、Inamori Go、Kamoto Umihiro、Isoda Yutaka、Tachibana Daiki、Nakamura Fumika、Fuchiwaki Ohmi、Okubo Yusuke、Ota Hiroki
    • Journal Title

      ACS Sensors

      Volume: 6 Issue: 1 Pages: 212-219

    • DOI

      10.1021/acssensors.0c02135

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hydrogel Actuator with a Built-In Stimulator Using Liquid Metal for Local Control2020

    • Author(s)
      Ken Matsubara, Daiki Tachibana, Ryosuke Matsuda, Hiroaki Onoe, Ohmi Fuchiwaki, and Hiroki Ota
    • Journal Title

      Advanced Intelligent Systems

      Volume: NA Issue: 5 Pages: 2000008-2000008

    • DOI

      10.1002/aisy.202000008

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Highly stretchable sensing array for independent detection of pressure and strain exploiting structural and resistive control2020

    • Author(s)
      Matsuda Ryosuke、Mizuguchi Satoru、Nakamura Fumika、Endo Takuma、Isoda Yutaka、Inamori Go、Ota Hiroki
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 1-9

    • DOI

      10.1038/s41598-020-69689-2

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Liquid-State Optoelectronics Using Liquid Metal2020

    • Author(s)
      Takashi Kozaki, Satoshi Saito, Yota Otsuki, Ryosuke Matsuda, Yutaka Isoda, Takuma Endo, Fumika Nakamura, Takuto Araki, Taichi Furukawa, Shoji Maruo, Masayoshi Watanabe, Kazuhide Ueno, and Hiroki Ota
    • Journal Title

      Advanced Electronic Materials

      Volume: NA Issue: 3 Pages: 1901135-1901135

    • DOI

      10.1002/aelm.201901135

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Stretchable array of resistive pressure sensors ignoring the effect of strain-induced deformation.2020

    • Author(s)
      R. Matsuda, S. Mizuguchi, F. Nakamura, T. Endo, G. Inamori, Y. Isoda, H Ota
    • Organizer
      2020 IEEE 33nd International Conference on Micro Electro Mechanical Systems (MEMS)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Highly deformable optoelectronics using liquid metal.2020

    • Author(s)
      T. Kozaki, S. Saito, Y. Otsuki, R. Matsuda, Y. Isoda, T. Endo, F. Nakamura, T. Araki, T. Furukawa, S. Maruo, M. Watanabe, K. Ueno, H. Ota
    • Organizer
      2020 IEEE 33nd International Conference on Micro Electro Mechanical Systems (MEMS)
    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Electrically controlled gel actuator using liquid metal electrode.2020

    • Author(s)
      K. Matsubara, Y. Tanaka, O. Fuchiwaki, H. Ota
    • Organizer
      2020 IEEE 33nd International Conference on Micro Electro Mechanical Systems (MEMS)
    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 誘導法に応じて変形するウェアラブル心電計の開発2020

    • Author(s)
      鷹屋 舞香, 稲森 豪, 磯田 豊, 中村 史香, 松田 涼介, 橘 大毅, 太田 裕貴
    • Organizer
      第11回マイクロ・ナノ工学シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] 全方位計測可能な液体材料傾斜センサの作成2020

    • Author(s)
      松田 涼佑, 宋 子豪, 沖崎 章夫, 太田 裕貴
    • Organizer
      第11回マイクロ・ナノ工学シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] Wearable Devices for Vital Sensing with Advanced Organic and Liquid Materials.”2019

    • Author(s)
      H. Ota
    • Organizer
      2019 IEEE International Symposium on Micro-NanoMechatronics and Human Science
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2019-07-04   Modified: 2022-01-27  

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