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Formation of percolation structure in metals and and innovation of manufacturing methods for stretchable conductive materials

Research Project

Project/Area Number 20K21127
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 28:Nano/micro science and related fields
Research InstitutionKyoto Institute of Technology

Principal Investigator

Nakanishi Hideyuki  京都工芸繊維大学, 材料化学系, 教授 (20619655)

Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords伸縮性導体 / 電気伝導率 / パーコレーション構造 / 結晶成長 / 高分子網目
Outline of Research at the Start

伸縮性導体は、エラストマーのように伸び縮みさせても電気を流す物質であり、次世代の柔らかく伸縮性のある電子デバイスの創出に欠かすことのできない材料である。現在の伸縮性導体の製法は、導電性フィラーなどの電気を流す物質をゴムなどの表面に塗布するか、全体に混合するかに大別される。しかし、塗布した場合、剥離による断線が避けられない。一方、単純に混合した場合、エラストマーの伸縮性は劣化し(硬くなり)、逆に、それを避けようと混合量を減らせば導電性が失われる。本研究の目標は、材料の内部に導電性の金属の構造体を局所的に発達させ、伸縮性と導電性のトレードオフの関係を解消することである。

Outline of Final Research Achievements

A method for fabricating stretchable conductive materials using metallic nanoparticles was studied. Using the proposed fabrication method, metal could be introduced into the interior of polymeric materials (fibers), thereby suppressing the breaking of electrical paths due to elongation of the material. It was confirmed that, depending on the fabrication conditions, the sample showed significant changes in the spatial distribution of the metal developed inside the fiber and other properties, such as electrical conductivity and elasticity, which in turn significantly changed. When the fabrication conditions were adjusted, it was possible to fabricate an elastic conductive material that exhibited good electrical conductivity of 100S/cm or higher in the range of 0 to 150% strain without compromising the excellent elasticity of the original fiber.

Academic Significance and Societal Importance of the Research Achievements

伸縮性導電材料の製法は、複雑な手法や特殊な操作を必要とする事が多く、一般性に欠けることが多かった。本研究では、金属ナノ粒子を用いて、材料を溶液に浸すことで、簡単に導電化できる製法を開発した。作製条件の調整を行う事で、最大で1000S/cm以上の高い電気伝導率が得られるだけでなく、伸縮性も保持することが可能であった。製法の単純さと得られる優れた性質の観点から、提案した製法は伸縮性導電材料の新しい作製手法として、今後のさらなる発展が期待された。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (17 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (4 results) Journal Article (9 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 9 results) Presentation (3 results) (of which Invited: 1 results) Book (1 results)

  • [Int'l Joint Research] シンガポール国立大学(シンガポール)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] ブダペスト工科経済大学(ハンガリー)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] BUTE(ハンガリー)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] National University of Singapore(シンガポール)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Self-assembly of graphene oxide flakes for smart and multifunctional coating with reversible formation of wrinkling patterns2022

    • Author(s)
      Su Xinran、Pandey Rakesh K.、Ma Junhao、Lim Wei Chun、Ao Chi Kit、Liu Changhui、Nakanishi Hideyuki、Soh Siowling
    • Journal Title

      Soft Matter

      Volume: 18 Issue: 18 Pages: 3546-3556

    • DOI

      10.1039/d1sm01834e

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Glycocalyx Components Detune the Cellular Uptake of Gold Nanoparticles in a Size- and Charge-Dependent Manner2022

    • Author(s)
      Peter Beatrix、Kanyo Nicolett、Kovacs Kinga Dora、Kov?cs Viktor、Szekacs Inna、P?cz B?la、Moln?r Kinga、Nakanishi Hideyuki、Lagzi Istvan、Horvath Robert
    • Journal Title

      ACS Applied Bio Materials

      Volume: 6 Issue: 1 Pages: 64-73

    • DOI

      10.1021/acsabm.2c00595

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Metastable nanoporous palladium evolving from palladium nanocrystals2021

    • Author(s)
      Teraji, S., Samitsu, S., Tran-Cong-Miyata, Q., Norisuye, T. & Nakanishi, H.
    • Journal Title

      ChemNanoMat

      Volume: 7 Issue: 10 Pages: 1099-1103

    • DOI

      10.1002/cnma.202100299

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Interfacial structures of particle-stabilized emulsions examined by ultrasonic scattering analysis with a core?shell model2021

    • Author(s)
      Kanamori Chisato、Nguyen Tran Thao、Tsuji Kazuto、Nakanishi Hideyuki、Tran-Cong-Miyata Qui、Norisuye Tomohisa
    • Journal Title

      Ultrasonics

      Volume: 116 Pages: 106510-106510

    • DOI

      10.1016/j.ultras.2021.106510

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Viscoelastic ECAH: Scattering analysis of spherical particles in suspension with viscoelasticity2021

    • Author(s)
      Tsuji Kazuto、Nakanishi Hideyuki、Norisuye Tomohisa
    • Journal Title

      Ultrasonics

      Volume: 115 Pages: 106463-106463

    • DOI

      10.1016/j.ultras.2021.106463

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Particle Size Distribution Analysis of Oil-in-Water Emulsion using Static and Dynamic Ultrasound Scattering Techniques2020

    • Author(s)
      Ting Dong, Tomohisa Norisuye, Hideyuki Nakanishi, Qui Tran-Cong-Miyata
    • Journal Title

      Ultrasonics

      Volume: 107 Pages: 106117-106117

    • DOI

      10.1016/j.ultras.2020.106117

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] The Relationship between Static Charge and Shape2020

    • Author(s)
      Pandey Rakesh K.、Ao Chi Kit、Lim Weichun、Sun Yajuan、Di Xin、Nakanishi Hideyuki、Soh Siowling
    • Journal Title

      ACS Central Science

      Volume: 6 Issue: 5 Pages: 704-714

    • DOI

      10.1021/acscentsci.9b01108

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nanocrystals Assembled by the Chemical Reaction of the Dispersion Solvent2020

    • Author(s)
      Nakanishi Hideyuki、Kawabata Yuto、Tsujiai Shogo、Tanaka Hayato、Teraji Satoshi、Hollo Gabor、Lagzi Istvan、Norisuye Tomohisa、Tran‐Cong‐Miyata Qui
    • Journal Title

      Angewandte Chemie International Edition

      Volume: 59 Issue: 31 Pages: 13086-13092

    • DOI

      10.1002/anie.202005827

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Selective Reduction Sites on Commercial Graphite Foil for Building Multimetallic Nano‐Assemblies for Energy Conversion2020

    • Author(s)
      Pandey Rakesh K.、Teraji Satoshi、Soh Siowling、Nakanishi Hideyuki
    • Journal Title

      ChemistrySelect

      Volume: 5 Issue: 42 Pages: 13269-13277

    • DOI

      10.1002/slct.202003185

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 無機/金属複合系高分子材料の研究2023

    • Author(s)
      中西英行
    • Organizer
      第166回ニューガラス研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 伸縮性導電繊維の特性解析2022

    • Author(s)
      綾井康平、桝本泰弘、中西英行
    • Organizer
      第71回高分子討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] パラジウム多孔体の作製とその表面構造2021

    • Author(s)
      寺地智司、中西英行、則末智久、宮田貴章
    • Organizer
      日本化学会第101春季年会
    • Related Report
      2020 Research-status Report
  • [Book] 金属ナノ粒子の開発とフレキシブルペーパー電池への応用 (金属ナノ粒子の合成/構造制御とペースト化および最新応用展開)2020

    • Author(s)
      中西英行
    • Total Pages
      11
    • Publisher
      R&D Support Center
    • Related Report
      2020 Research-status Report

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Published: 2020-08-03   Modified: 2024-01-30  

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