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Four-dimensional analysis of crystallization by high-speed imaging

Research Project

Project/Area Number 20K15123
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 28030:Nanomaterials-related
Research InstitutionThe University of Tokyo

Principal Investigator

Nakamuro Takayuki  東京大学, 総括プロジェクト機構, 特任准教授 (30831276)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords核形成 / 結晶成長 / 透過電子顕微鏡 / 原子分解能 / 時間分解観察 / 結晶化 / 無機化合物 / 時間分解能 / 時間発展型解析 / 電子顕微鏡 / 動的挙動解析
Outline of Research at the Start

結晶系や格子欠陥が化学的・物理的性質に直結するために,結晶化過程の機構解明並びにその制御が結晶学研究において重要視される.計算的アプローチが主であった当該領域に対して,本研究では透過型電子顕微鏡を用いた結晶化挙動の分子動画撮影により,結晶化機構の詳細を論究する.結晶化挙動のその場解析法開発による結晶化機構究明,ならびに高速分子動画撮影による本手法が結晶学の汎用法として発展していくための実験的・理論的知見の収集を行う.

Outline of Final Research Achievements

I investigated the molecular-level details of the crystallization process by high-speed imaging using single-molecule atomic-resolution time-resolved electron microscopy (SMART-EM) method. Sodium chloride (NaCl) was selected as a model substrate, and the molecular dynamics during nucleation and crystal growth were successfully analyzed in detail. By including structural information such as the width, length, and depth of clusters that occur during observation and the time axis, four-dimensional dynamics can be observed by electron microscopy, and the experimental results can be interpreted by the Monte Carlo method. The possibility of expanding the use of molecular imaging to a wide variety of substrates, including not only NaCl but also other cations and anions, is becoming clear. The visualization of molecular dynamics, cinematic chemistry, opens up the prospect of contributing to education.

Academic Significance and Societal Importance of the Research Achievements

結晶学は無機化合物に限らず,医薬品などの有機化合物やタンパク質など幅広い分野で興味が持たれる研究領域である.しかし結晶化過程がサブナノメートルスケールでかつ短時間オーダーで起こる事象であるために実験的な機構研究が困難となり,計算的手法に基づいた理論研究が主であった.本研究では原子分解能電子顕微鏡を用いた結晶挙動の実時間観測に高速撮像技術を組み合わせることにより,今まで窺い知ることができなかった結晶化における非平衡動態の検知に成功した.得られた構造情報は理論の発展ならびに結晶化手法の向上に寄与すると考えられ,広範な分野への好影響が期待できる.

Report

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

    (23 results)

All 2023 2022 2021

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (17 results) (of which Int'l Joint Research: 4 results,  Invited: 7 results)

  • [Journal Article] Cinematographic Recording of a Metastable Floating Island in Two- and Three-Dimensional Crystal Growth2022

    • Author(s)
      Sakakibara Masaya、Nada Hiroki、Nakamuro Takayuki、Nakamura Eiichi
    • Journal Title

      ACS Central Science

      Volume: 8 Issue: 12 Pages: 1704-1710

    • DOI

      10.1021/acscentsci.2c01093

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Precision Synthesis and Atomistic Analysis of Deep-Blue Cubic Quantum Dots Made via Self-Organization2022

    • Author(s)
      Chevalier Olivier J. G. L.、Nakamuro Takayuki、Sato Wataru、Miyashita Satoru、Chiba Takayuki、Kido Junji、Shang Rui、Nakamura Eiichi
    • Journal Title

      Journal of the American Chemical Society

      Volume: 144 Issue: 46 Pages: 21146-21156

    • DOI

      10.1021/jacs.2c08227

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Excited state modulation of C70 dimerization in a carbon nanotube under a variable electron acceleration voltage2022

    • Author(s)
      Liu Dongxin, Lungerich Dominik, Nakamuro Takayuki, Harano Koji, Nakamura Eiichi
    • Journal Title

      Micron

      Volume: 160 Pages: 103316-103316

    • DOI

      10.1016/j.micron.2022.103316

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Atomic-number ( <i>Z</i> )-correlated atomic sizes for deciphering electron microscopic molecular images2022

    • Author(s)
      Xing Junfei、Takeuchi Keishi、Kamei Ko、Nakamuro Takayuki、Harano Koji、Nakamura Eiichi
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 119 Issue: 14

    • DOI

      10.1073/pnas.2114432119

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ionization and electron excitation of C60 in a carbon nanotube: A variable temperature/voltage transmission electron microscopic study2022

    • Author(s)
      Dongxin Liu, Satori Kowashi, Takayuki Nakamuro, Dominik Lungerich, Kaoru Yamanouchi, Koji Harano, Eiichi Nakamura
    • Journal Title

      Proceedings of the National Academy of Sciences of the United States of America

      Volume: 119 Issue: 15 Pages: 290119-290119

    • DOI

      10.1073/pnas.2200290119

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Capturing the Moment of Emergence of Crystal Nucleus from Disorder2021

    • Author(s)
      Nakamuro Takayuki、Sakakibara Masaya、Nada Hiroki、Harano Koji、Nakamura Eiichi
    • Journal Title

      Journal of the American Chemical Society

      Volume: 143 Issue: 4 Pages: 1763-1767

    • DOI

      10.1021/jacs.0c12100

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ナノ精密合成と分子動態の連続追跡法の融合 映像分子化学の黎明2023

    • Author(s)
      中室貴幸
    • Organizer
      日本化学会第103春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 原子分解能での核形成・結晶成長プロセスのその場観察2023

    • Author(s)
      中室貴幸
    • Organizer
      日本物理学2023年春季大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 今まさに結晶ができるところを見る2022

    • Author(s)
      中室貴幸
    • Organizer
      化学への招待-講演会- 「分析化学の最前線」
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 目で見る科学研究および教育の実践 : 映像分子化学の黎明2022

    • Author(s)
      中室貴幸
    • Organizer
      錯体化学若手の会夏の学校2022
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Structural Fluctuations of Nanoclusters Captured by Molecular Electron Microscopy2022

    • Author(s)
      Takayuki Nakamuro
    • Organizer
      Atomically Precise Nanochemistry Gordon Research Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 分子釣り針で捕捉した深青色発光ペロブスカイト 量子ドットの動的原子像2022

    • Author(s)
      中室貴幸, Olivier Chevalier, Rui SHANG, 中村栄一
    • Organizer
      日本顕微鏡学会 第78回学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Atomic Behaviors of Quantum Dots and NaCl Crystal Nucleus Revealed by Single-Molecule Analyses2022

    • Author(s)
      Takayuki Nakamuro, Olivier Chevalier, Masaya Sakakibara, Rui Shang, Eiichi Nakamura
    • Organizer
      The 102th CSJ Annual Meeting
    • Related Report
      2021 Research-status Report
  • [Presentation] Micro Electron Diffraction and SMART-EM2022

    • Author(s)
      Takayuki Nakamuro
    • Organizer
      構造生命科学連携研究機構2021年度顕微鏡法勉強会
    • Related Report
      2021 Research-status Report
  • [Presentation] 結晶成長における動的な分子描像の抽出2022

    • Author(s)
      中室貴幸
    • Organizer
      低温科学研究所共同利用研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] SMART-EM法で探る結晶化メカニズムの詳細2022

    • Author(s)
      中室貴幸
    • Organizer
      2021年度第3回晶析分科会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Real-time Observation of NaCl Crystallization at the Molecular Level2021

    • Author(s)
      Takayuki Nakamuro
    • Organizer
      Interfaces and free boundaries
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Time-resolved atomic resolution imaging of NaCl nucleation and growth in-situ2021

    • Author(s)
      Takayuki Nakamuro, Masaya Sakakibara, Koji Harano, Eiichi Nakamura
    • Organizer
      Pacifichem
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 分子映像から迫る結晶化現象における単分子挙動2021

    • Author(s)
      中室貴幸,榊原雅也,灘浩樹,原野幸治,中村栄一
    • Organizer
      令和3年度結晶学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 単分子動的挙動観測による結晶核形成瞬間の捕捉と結晶成長過程追跡2021

    • Author(s)
      中室貴幸,榊原雅也,灘浩樹,原野幸治,中村栄一
    • Organizer
      JCCG-50
    • Related Report
      2021 Research-status Report
  • [Presentation] Capturing the moment of nucleation and tracing the crystal growth by SMART-EM2021

    • Author(s)
      Takayuki Nakamuro, Masaya Sakakibara, Hiroki Nada, Koji Harano, Eiichi Nakamura
    • Organizer
      Japan-Canada Joint Seminar on Advanced Electron Microscopy and its Application ―2nd Canada Japan Microscopy Societies Symposium 2021―
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 有機合成化学者が挑む電子顕微鏡科学2021

    • Author(s)
      中室貴幸
    • Organizer
      令和2年度育志賞研究発表会
    • Related Report
      2020 Research-status Report
  • [Presentation] Salt Crystallization Filmed at Atomic Level2021

    • Author(s)
      Takayuki Nakamuro
    • Organizer
      令和2年度育志賞研究発表会
    • Related Report
      2020 Research-status Report

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

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