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Development of pressure sensors without sensory interferences

Research Project

Project/Area Number 21K14204
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 21060:Electron device and electronic equipment-related
Research InstitutionInstitute of Physical and Chemical Research (2023)
The University of Tokyo (2021-2022)

Principal Investigator

Lee Sunghoon  国立研究開発法人理化学研究所, 開拓研究本部, 研究員 (80873132)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2023: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsスキンセンサ / 圧力センサ / 皮膚感覚 / 圧力センサー / 皮膚センサー / スキンセンサー / 電界紡糸法 / ナノメッシュ / 貼り付け型センサー
Outline of Research at the Start

本研究課題は、人間の感覚に影響を与えずに動作可能な圧力センサーの開発を目的とし、人間の本来の行動や動作を正確に計測する手法を確立する。具体的には、ナノサイズのメッシュ構造(ナノメッシュ)を利用する容量式圧力センサーを開発し、センサーを皮膚に貼り付けた状態で人間の感覚に及ぼす影響を除去する。非常に薄いナノメッシュ保護層の積層技術を確立し、同時に皮膚で動作する際における機械的耐久性を確保する。本手法を用いることで、センサーを貼り付けた状態でも本来の皮膚感覚を維持しながら圧力を計測することが可能となる。

Outline of Final Research Achievements

In this research, we aimed to develop a pressure sensor that can be attached to the skin without sensory interference. We succesfully established a fabrication method for skin-attachable sensors for accurately monitoring natural human behaviors and movements. Specifically, we developed a capacitive pressure sensor utilizing a nanoscaled mesh structure (nanomesh pressure sensor). We quantitatively proved eliminating the impact on skin sensation although the sensor is directly attached to the skin. By utilizing this method, it is possible to acquire the tactile information during contact with external objects while maintaining the inherent skin sensation.

Academic Significance and Societal Importance of the Research Achievements

素材の厚みを薄くすると皮膚の感覚は伝わりやすくなる。一方で、素材を貫通する際に必要な力や素材が裂断する際の力は、素材の厚みに比例するため、薄い素材はより弱い力でも壊れやすい。またセンサーの表面をこすると薄い素材は削られてなくなってしまうため、薄さと摩擦耐久性はトレードオフの関係にある。本研究では、ポリウレタンナノファイバに水溶性ポリマのポリビニルアルコールを溶解・浸透させることで、皮膚感覚に影響を与えないほどの極薄性と摩擦耐久性を両立させることに成功し、皮膚貼り付け型センサにおける本質的な課題を克服することに成功した。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (10 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (1 results) Presentation (9 results) (of which Int'l Joint Research: 8 results,  Invited: 7 results)

  • [Int'l Joint Research] Sogang University/DGIST(韓国)

    • Related Report
      2023 Annual Research Report
  • [Presentation] Ultrathin organic transistors for next-generation skin electronics2024

    • Author(s)
      Sunghoon Lee, Takao Someya
    • Organizer
      18th International Thin-Film Transistor Conference (ITC 2024)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Ultrathin organic transistors toward next-generation skin electronics2023

    • Author(s)
      Sunghoon Lee, Tomoyuki Yokota, Takao Someya
    • Organizer
      2023 International Conference on Semiconductor Technology for Ultra Large Scale Integrated Circuits and Thin Film Transistors (ULSIC vs TFT)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Ultrasoft nanomesh electronics for on-skin applications2023

    • Author(s)
      Sunghoon Lee
    • Organizer
      The 23rd IEEE International Conference on Nanotechnology (IEEE Nano 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Next-Generation Wearable Electronics: Skin-Attachable Electronics2023

    • Author(s)
      Sunghoon Lee
    • Organizer
      NANO KOREA 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Stretchable and ultrathin nanomesh pressure sensor2023

    • Author(s)
      Sunghoon Lee, Yan Wang, Tomoyuki Yokota, Takao Someya
    • Organizer
      6th International Conference on Mechatronics Technology (ICMT 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A nanomesh pressure sensor for monitoring finger manipulation while avoiding interference with human sensations2022

    • Author(s)
      Sunghoon Lee, Tomoyuki Yokota, and Takao Someya
    • Organizer
      2022 Materials Research Society Fall Meeting & Exhibit
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 皮膚感覚に影響を与えない皮膚貼り付け型圧力センサ2022

    • Author(s)
      李成薫,フランクリンさえ, 横田知之,レイブラズ, チエン ゴードン,フランクリンデビット, 染谷隆夫
    • Organizer
      第83回応用物理学会秋季
    • Related Report
      2022 Research-status Report
  • [Presentation] A skin-attachable nanomesh sensor without sensory interference2022

    • Author(s)
      Sunghoon Lee
    • Organizer
      2022 International Conference on Flexible and Printed Electronics
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Skin-Attachable Nanomesh Sensor without Sensory Interference2021

    • Author(s)
      Sunghoon Lee, Tomoyuki Yokota, and Takao Someya
    • Organizer
      The 22th International Union of Materials Research Societies International Conference in Asia (IUMRS-ICA) (2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2021-04-28   Modified: 2025-01-30  

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