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

2023 Fiscal Year Research-status Report

Realization of Relaxor Ferroelectricity in Untrathin 2-Dimensional Nanosheets of Ferroelectric Homopolymers and Its General Mechanism

Research Project

Project/Area Number 23K04847
Research InstitutionTohoku University

Principal Investigator

朱 慧娥  東北大学, 工学研究科, 客員教授 (70754539)

Project Period (FY) 2023-04-01 – 2026-03-31
KeywordsIonic liquid / Ferroelectric / Crystal orientation
Outline of Annual Research Achievements

Increase of β phase PVDF in films were achieved by two methods:
(1) Interfacial preparation of PVDF/pDDA alloys was successfully obtained. FT-IR spectra were used to confirm the crysatallization of PVDF with different ratio of PVDF/PDDA. It shows the decrease of the concentration of PVDF in the polymer monolayer alloys caused the reduction of PVDF crystallites.
(2) Rich β phase improved the device properties by large remanent polarization values. The effect of ionic liquids on the PVDF crystal orientation at the PVDF polymer were investigated.Optimization on ferroelectric crystal content and crystal orientation was confirmed with the addition of IL which also contributed to the vertical phase separation structures in the polymer films.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

According reasearch plan, preparation of polymer alloy monolayers with tunable ferroelectric polymer contents and realization of monolayer transfer to substrates and electrodes should be achieved by the 2023 fiscal year.

Strategy for Future Research Activity

(1) Realization of arbitrarily changeable layer structure in the multilayered nanosheets with controllable physical wall thickness for ferroelectric domain (First half of FY2024)
(2) Crystallization analysis and crystal size characterization (Second half of FY2024)

Causes of Carryover

The reason for incurring amount to be used next fiscal year is that the process for obtaining the premium conditions were shortened. Conference participation times were not as many as planned. In the following fiscal year, the incurring funding (228,269JPY) for FYF2024 will be added to miscellaneous cost related to research activities such as English paper polishing. The other part will have no change as planned in the funding application form.

  • Research Products

    (2 results)

All 2023

All Journal Article (1 results) Presentation (1 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] 機能性高分子ナノシートの構築2023

    • Author(s)
      三ツ石方也、朱慧娥、石﨑裕也、山本俊介、松井淳、宮下徳治
    • Journal Title

      科学と工業

      Volume: 98 Pages: 42-48

  • [Presentation] Hybrid Cyclic Siloxane as Building Blocks for Functional Materials2023

    • Author(s)
      Huie Zhu
    • Organizer
      令和5年度化学系学協会東北大会および日本化学会東北支部80周年記念国際会議
    • Int'l Joint Research / Invited

URL: 

Published: 2024-12-25  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi