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Atomic Level Characterization of Molecular Self Assembly: its formation and collapse

Research Project

Project/Area Number 19K04434
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21030:Measurement engineering-related
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Koshino Masanori  国立研究開発法人産業技術総合研究所, 材料・化学領域, 研究グループ長 (00505240)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords分子集合体 / ナノ材料 / TEM / EELS / 有機分子 / 第一原理計算 / 分子動力学計算 / 界面活性剤 / 電子顕微鏡 / 両親媒性有機分子 / ソフトマテリアル / シミュレーション / グラフェン / 臨海ミセル濃度 / 電子状態変化 / 分子動力学 / MD / 両親媒性分子 / 自己集積 / 多次元測定
Outline of Research at the Start

極小の両親媒性有機分子で構成される自己集積型分子集合体膜の形成および崩壊過程に対し,最先端技術を搭載した走査/透過型電子顕微鏡により計測・評価し,電子線により容易に構造変化が起こるソフトマテリアルを高感度,高分解能,高速に原子・分子レベルで時間分解型の多次元測定を行う方法を開発する.また,大量に得られる実験データのノイズ除去技術や対象物質の画像認識技術を開発するとともに,100万個以上の分子集合体膜を取り扱う分子動力学計算および電子顕微鏡像シミュレーションを利用した理論解釈を行う.さらに得られたデータを試料作製プロセスへフィードバックする機械学習システムの有効性を検討する.

Outline of Final Research Achievements

Throughout the research period, the formation and disintegration processes of self-assembled molecular assembly films composed of extremely small amphiphilic organic molecules were measured and evaluated using scanning/transmission electron microscopes equipped with state-of-the-art technology. The objective of developing a time-resolved multidimensional measurement method at the atomic and molecular level with high sensitivity, high resolution, and high speed for soft materials whose structure can easily change due to radiation has been achieved. A new method to remove noise from large amounts of experimental data and image recognition technology for target substances has been newly developed. Molecular dynamics simulations and electron microscopic image simulations of membranes consisting of more than 1 million atoms were carried out, providing important results that can explain experimental results.

Academic Significance and Societal Importance of the Research Achievements

分子集合体膜とそれらを構成する両親媒性有機分子(界面活性剤:サーファクタント)は、化粧品、家庭用洗剤、工業用洗浄剤、各種実験材料の分散や精製に広く利用される非常に身近な材料であるとともに環境・資源・エネルギー・エレクトロニクス・医療など様々な分野で利用されている。本研究課題では、分子膜が形成する際、膜を構成する有機分子やその周りの水分子がどのように振る舞うのか、分子膜の大きさはどうしたら制御できるか、膜構造が安定に存在するためにはどのような生成プロセスや構造を経たらよいのかを透過型電子顕微鏡および時間分解型の計測評価技術を用いて分子の直接観察と元素分析によって明らかにすることを目的とした。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (13 results)

All 2023 2022 2021 2020 Other

All Journal Article (7 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 7 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Remarks (2 results)

  • [Journal Article] Direct Observation of Locally Modified Excitonic Effects within a Moire Unit Cell in Twisted Bilayer Graphene2023

    • Author(s)
      Liu Ming、Senga Ryosuke、Koshino Masanori、Lin Yung-Chang、Suenaga Kazu
    • Journal Title

      ACS Nano

      Volume: 17 Issue: 18 Pages: 18433-18440

    • DOI

      10.1021/acsnano.3c06021

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Momentum-Dependent Oscillator Strength Crossover of Excitons and Plasmons in Two-Dimensional PtSe22022

    • Author(s)
      Jinhua Hong, Mark Kamper Svendsen, Masanori Koshino, Thomas Pichler, Hua Xu, Kazu Suenaga*, and Kristian S. Thygesen
    • Journal Title

      ACS Nano

      Volume: 16 Issue: 8 Pages: 12328-12337

    • DOI

      10.1021/acsnano.2c03322

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Multiple 2D Phase Transformations in Monolayer Transition Metal Chalcogenides2022

    • Author(s)
      Hong Jinhua、Chen Xi、Li Pai、Koshino Masanori、Li Shisheng、Xu Hua、Hu Zhixin、Ding Feng、Suenaga Kazu
    • Journal Title

      Advanced Materials

      Volume: 34 Issue: 19 Pages: 2200643-2200643

    • DOI

      10.1002/adma.202200643

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Deciphering the Intense Postgap Absorptions of Monolayer Transition Metal Dichalcogenides2021

    • Author(s)
      Hong Jinhua、Koshino Masanori、Senga Ryosuke、Pichler Thomas、Xu Hua、Suenaga Kazu
    • Journal Title

      ACS Nano

      Volume: 15 Issue: 4 Pages: 7783-7789

    • DOI

      10.1021/acsnano.1c01868

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Thermal management function of graphene under cryogenic temperature2021

    • Author(s)
      Kato Ryuichi、Naya Masami、Kasahata Naoki、Senga Ryosuke、Sato Chikara、Koshino Masanori、Suenaga Kazu、Hasegawa Masataka
    • Journal Title

      Carbon

      Volume: 183 Pages: 970-976

    • DOI

      10.1016/j.carbon.2021.07.077

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] STEM imaging artifacts with three-fold astigmatism in monolayer transition metal dichalcogenides2020

    • Author(s)
      Hong Jinhua、Koshino Masanori、Xu Hua、Feng Qingliang、Suenaga Kazu
    • Journal Title

      Applied Physics Letters

      Volume: 116 Issue: 24 Pages: 243102-243102

    • DOI

      10.1063/5.0011782

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Filling control of n-type and p-type dopant molecules in single-wall carbon nanotubes2020

    • Author(s)
      Wang Guowei、Tanaka Takeshi、Koshino Masanori、Suenaga Kazu、Kataura Hiromichi
    • Journal Title

      Applied Physics Express

      Volume: 13 Issue: 6 Pages: 065003-065003

    • DOI

      10.35848/1882-0786/ab8c60

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Characterizing low-dimensional materials by low-voltage scanning/transmission electron microscopy2023

    • Author(s)
      越野雅至
    • Organizer
      The 40th International Conference of the Microscopy Society of Thailand (MST40)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] クライオ電子顕微鏡中で成長する氷のその場解析2023

    • Author(s)
      越野雅至
    • Organizer
      日本顕微鏡学会第79回学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] こんな時期だから?~リモート高性能電子顕微鏡~2022

    • Author(s)
      越野 雅至, 古賀 健司, 佐藤 雄太, 千賀 亮典, 林 永昌
    • Organizer
      nano tech 2022
    • Related Report
      2021 Research-status Report
  • [Presentation] 低次元材料開発のための低加速透過型電子顕微鏡技術開発の現状と課題2020

    • Author(s)
      越野 雅至
    • Organizer
      学振合同研究会(薄膜第131委員会、マイクロビームアナリシス第141委員会、半導体界面制御技術第154委員会)
    • Related Report
      2019 Research-status Report
    • Invited
  • [Remarks] 産業技術総合研究所ナノ材料研究部門電子顕微鏡グループ

    • URL

      https://unit.aist.go.jp/nmri/e-mscope/

    • Related Report
      2023 Annual Research Report
  • [Remarks] 産業技術総合研究所 越野雅至

    • URL

      https://staff.aist.go.jp/m-koshino/

    • Related Report
      2023 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2025-01-30  

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