• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Elucidation of Subdomain Structures in Ferroelectric Polymers by Scanning Probe Microscopy

Research Project

Project/Area Number 20K04566
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21050:Electric and electronic materials-related
Research InstitutionKansai University

Principal Investigator

Takarada Jun  関西大学, システム理工学部, 准教授 (40637089)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords圧電応答力顕微鏡 / 相転移メカニズム
Outline of Research at the Start

本研究は強誘電高分子膜の分極反転や相転移メカニズムの解明に貢献する.これにより最終的にフレキシブルな身に着けるデバイスが持つ情報を一時的に保存する次世代のメモリを提供することにつながる.分極反転や相転移のメカニズムをカンチレバーの接触共振を使ったプローブ顕微技術によって評価する.本評価から本膜をメモリとして活用するための記憶密度,書込読出の時間や電圧,温度耐性等の指標を提供する.

Outline of Final Research Achievements

The purpose of this study is to elucidate the phase transition mechanism of ferroelectric polymer films by scanning probe microscopy.
Using a contact resonance PFM, we observed the polarization region in the micro region of ferroelectric polymers. The phase transition temperatures varied from 60°C to 80°C at the macroscopic viewpoint because the phase transition temperatures were different for each particle. The results of this research will provide indices such as memory density and temperature tolerance for utilizing this film as a memory.
Lateral PFM was also used to observe the electromechanical response of particles of highly biodegradable polymers. By increasing the annealing time, different positive and negative electromechanical responses were obtained within the particles. The results are expected to be applied to environmentally friendly sensors with high biodegradability.

Academic Significance and Societal Importance of the Research Achievements

研究成果の学術的意義は強誘電高分子を数百nmスケールで観た時に、その相転移は粒子毎に生じていたことにある.巨視的に観た時の相転移温度に幅があることは以前からわかっていたがその原因の解明に一歩近づいた.また強誘電相から常誘電相に転移した温度においては粒子固有の分極域を持っているが、隣接する粒子とは反対の位相を持っているため、巨視的に観ると相殺されて強誘電性が消失していることが観測できた.
社会的意義は本膜をメモリとして活用するための記憶密度,温度耐性等の指標を提供できたことである.未来のIoT社会にフレキシブルなデバイスが持つ膨大なデータを支える次世代のメモリとして活用することにつながる.

Report

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

    (5 results)

All 2023 2022 2021

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

  • [Journal Article] Application of Piezoelectric PLLA Braided Cord as Wearable Sensor to Realize Monitoring System for Indoor Dogs with Less Physical or Mental Stress2023

    • Author(s)
      Y. Tajitsu,et al.
    • Journal Title

      Micromachines

      Volume: 14 Issue: 1 Pages: 143-143

    • DOI

      10.3390/mi14010143

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Frequency response analysis of piezoelectric resonance of poly-lactic acid film for bending angle detection2022

    • Author(s)
      Takarada Jun, Nakanishi Riku, Wang Yizhao, Yamamoto Ken, Mori Kenichi, Ando Masamichi, Tajitsu Yoshiro
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Issue: SN Pages: SN1035-SN1035

    • DOI

      10.35848/1347-4065/ac85f8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Prototype Sensor System Using Fabricated Piezoelectric Braided Cord for Work-Environment Measurement during Work from Home2021

    • Author(s)
      Yoshiro Tajitsu, Jun Takarada, et al.
    • Journal Title

      Micromachines

      Volume: 12 Issue: 8 Pages: 966-978

    • DOI

      10.3390/mi12080966

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Local Evaluation of Piezoelectricity of Polyester Polymer Processed with Microwave Heating2021

    • Author(s)
      Jun TAKARADA, Yifu TANG, Takaaki TONE, Kohei TAKATANI, Shingo TANAKA, Yoshihiko NISHIZAWA, Masamichi ANDO, Daisuke MANAI, Masayuki KABATA, Tomoya MIZUMORI, Makoto KUSUNOKI, Takanori MATSUYAMA and Yoshiro TAJITSU
    • Journal Title

      静電気学会誌

      Volume: 45 Pages: 28-33

    • NAID

      40022500382

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Local Observation of Depolarization of Poly(vinylidene fluoride/trifluoroethylene) 55/45 film Using Piezoresponse Force Microscopy2021

    • Author(s)
      Jun Takarada, Takaaki Tone, Shota Saihara, Yoshiro Tajitsu
    • Organizer
      IEEE ISAF2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi