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Chiral Symmetry Breaking in Magnetoelectrolysis Processes

Research Project

Project/Area Number 19K05230
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 28050:Nano/micro-systems-related
Research InstitutionTohoku University

Principal Investigator

Mogi Iwao  東北大学, 金属材料研究所, 助教 (50210084)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywordsマイクロ渦流 / ゆらぎ / キラリティ / 対称性の破れ / 磁気電気化学 / アミノ酸 / マイクロ電磁渦流 / 磁気電析 / 磁気流体力学 / マイクロMHD渦流 / キラル界面
Outline of Research at the Start

固体表面にキラルな構造が存在するとき,そのキラル界面は不斉触媒として機能し,生命誕生に向かう分子進化において重要な役割を果たしたと考えられている.申請者は,磁場中での電析(磁気電析)が金属薄膜の表面にキラリティを誘発することを見出し,そのキラル挙動を研究してきた.磁気電析においては,磁場極性を反転すると界面キラリティも反転する.ところが,様々な条件で磁気電析を行う中で,磁場極性に対しキラル対称性が破れる条件が存在することが見つかった.本研究では,キラル対称性の破れる条件を徹底的に精査し,そのメカニズムの解明を目指す.そしてその洞察をもとに,生体分子のホモキラリティ発現のメカニズムを提案する.

Outline of Final Research Achievements

Electrodeposition under magnetic fields (magneto-electrodeposition) is able to produce chiral surfaces on metal films. The surface chirality exhibits “odd chirality”, that is, the reversal of magnetic fields causes the opposite chiral sign. In this study, we conducted a lot of magneto-electrodeposition experiments with various conditions, such as the change of magnetic fields and electrode diameters, specific adsorption, and cell rotation. The breaking of odd chirality was found in several special conditions where the micro-magnetohydrodynamic vortices could be fluctuated. This finding indicates that the fluctuation in the self-organized state could be the origin of chiral symmetry breaking.

Academic Significance and Societal Importance of the Research Achievements

鉱物の結晶成長や溶解過程で生じる界面のキラリティは,生命の起源,ホモキラリティなどと深く関わる極めて重要な研究テーマである.本研究では,磁気電析系において奇のキラリティの破れがマイクロ渦流のゆらぎに起因することを見出した.このことは「キラル対称性の破れが自己組織化状態におけるゆらぎに起因する」という普遍的な概念へと発展する可能性があり,学術的な意義は極めて大きい.

Report

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

    (25 results)

All 2022 2021 2020 2019

All Journal Article (13 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 11 results,  Open Access: 7 results) Presentation (12 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] reaking of Odd Chirality in Magnetoelectrodeposition2022

    • Author(s)
      I. Mogi, R. Morimoto, R. Aogaki, K. Takahashi
    • Journal Title

      Magnetochemistry

      Volume: 8 Issue: 7 Pages: 67-67

    • DOI

      10.3390/magnetochemistry8070067

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Theory of Chiral Electrodeposition by Chiral Micro- and Nano-Vortices under a Vertical Magnetic Field -1: 2D Nucleation by Micro-Vortices2022

    • Author(s)
      R. Morimoto , M. Miura, A. Sugiyama, M. Miura, Y. Oshikiri, I. Mogi, Y. Yamauchi, S. Takagi, R. Aogaki
    • Journal Title

      Magnetochemistry

      Volume: 8 Issue: 7 Pages: 71-71

    • DOI

      10.3390/magnetochemistry8070071

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Breaking of Odd Chirality in Magnetoelectrodeposition of Copper Films on Micro-Electrodes2021

    • Author(s)
      I. Mogi, R. Aogaki, K. Takahashi
    • Journal Title

      Magnetochemistry

      Volume: 7 Issue: 11 Pages: 142-142

    • DOI

      10.3390/magnetochemistry7110142

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fluctuation Effects of Magnetohydrodynamic Micro-Vortices on Odd Chirality in Magnetoelectrolysis2020

    • Author(s)
      I. Mogi, R. Aogaki, K. Takahashi
    • Journal Title

      Magnetochemistry

      Volume: 6 Issue: 3 Pages: 43-43

    • DOI

      10.3390/magnetochemistry6030043

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of a high magnetic field on aluminum electrodeposition using an ionic liquid2020

    • Author(s)
      H. Matsushima, H. Takahashi, T. Suzuki, M. Ueda, I. Mogi
    • Journal Title

      Electrochem. Commun.

      Volume: 115 Pages: 106733-106733

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Excess heat production in the redox couple reaction of ferricyanide and ferrocyanide2020

    • Author(s)
      A. Sugiyama, M. Miura, Y. Oshikiri, Y. Kim, R. Morimoto, M. Miura, T. Osaka, I. Mogi, Y. Yamauchi & R. Aogaki
    • Journal Title

      Sci. Rep.

      Volume: 10 Issue: 1 Pages: 20072-20072

    • DOI

      10.1038/s41598-020-76611-3

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Long-Term Electrodeposition under a Uniform Parallel Magnetic Field. 1. Instability of Two-Dimensional Nucleation in an Electric Double Layer2020

    • Author(s)
      R. Morimoto, M. Miura, A. Sugiyama, M. Miura, Y. Oshikiri, Y. Kim, I. Mogi, S. Takagi, Y. Yamauchi & R. Aogaki
    • Journal Title

      J. Phys. Chem. B

      Volume: 124 Issue: 52 Pages: 11854-11869

    • DOI

      10.1021/acs.jpcb.0c05903

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Long-Term Electrodeposition under a Uniform Parallel Magnetic Field. 2. Flow-Mode Transition from Laminar MHD Flow to Convection Cells with Two-Dimensional (2D) Nucleation2020

    • Author(s)
      R. Morimoto, M. Miura, A. Sugiyama, M. Miura, Y. Oshikiri, Y. Kim, I. Mogi, S. Takagi, Y. Yamauchi & R. Aogaki
    • Journal Title

      J. Phys. Chem. B

      Volume: 124 Issue: 52 Pages: 11870-11881

    • DOI

      10.1021/acs.jpcb.0c05905

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Surface Chirality in Rotational Magnetoelecctrodeposition of Copper Films2019

    • Author(s)
      I. Mogi, R. Morimoto, R. Aogaki, K. Takahashi
    • Journal Title

      Magnetochemistry

      Volume: 5 Issue: 3 Pages: 5030053-5030053

    • DOI

      10.3390/magnetochemistry5030053

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Breaking of odd magnetic-field dependence of surface chirality in magnetoelectrolysis2019

    • Author(s)
      I. Mogi, R. Aogaki, K. Takahashi
    • Journal Title

      Proc. on 11th Int. PAMIR Conf. on Fundamental and Applied MHD, (Reims, France, July. 1-5, 2019)

      Volume: 1 Pages: 333-337

    • Related Report
      2019 Research-status Report
  • [Journal Article] Theory of Microscopic Electrodeposition under a Uniform Parallel Magnetic Field - 2. Suppression of 3D Nucleation by Micro-MHD flow2019

    • Author(s)
      R. Morimoto, M. Miura, A. Sugiyama, M. Miura, Y. Oshikiri, . Mogi, S. Takagi, Y. Yamauchi, R. Aogaki
    • Journal Title

      J. Electroanal. Chem.

      Volume: 847 Pages: 113255-113255

    • DOI

      10.1016/j.jelechem.2019.113255

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Excess Heat Production by the Pair Annihilation of Ionic Vacancies in Copper Redox Reactions2019

    • Author(s)
      M. Miura, A. Sugiyama, Y. Oshikiri, R. Morimoto, I. Mogi, M. Miura, S. Takagi, J. Kim, Y. Yamauchi, R. Aogaki
    • Journal Title

      Sci. Rep.

      Volume: 9 Issue: 1 Pages: 13695-13695

    • DOI

      10.1038/s41598-019-49310-x

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Theory of Microscopic Electrodeposition under a Uniform Parallel Magnetic Field - 1. Nonequilibrium Fluctuations of Magnetohydrodynamic (MHD) Flow2019

    • Author(s)
      R. Morimoto, M. Miura, A. Sugiyama, M. Miura, Y. Oshikiri, . Mogi, S. Takagi, Y. Yamauchi, R. Aogaki
    • Journal Title

      J. Electroanal. Chem.

      Volume: 848 Pages: 113254-113254

    • DOI

      10.1016/j.jelechem.2019.113254

    • Related Report
      2019 Research-status Report
  • [Presentation] 磁気電析における奇のキラリティの破れ2022

    • Author(s)
      茂木 巖
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 磁気電析における奇のキラリティの挙動2022

    • Author(s)
      茂木 巖
    • Organizer
      2022年電気化学秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 磁気電析におけるキラル対称性の破れ2022

    • Author(s)
      茂木 巖
    • Organizer
      第16回日本磁気科学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 磁気電析のキラル対称性におよぼすマイクロ電極の効果2022

    • Author(s)
      茂木 巖
    • Organizer
      電気化学会第89回大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 磁気電析のキラル対称性におよぼす添加剤の効果2022

    • Author(s)
      茂木 巖
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] マイクロ電極における磁気電析のキラル対称性の破れ2021

    • Author(s)
      茂木 巖
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 磁気電析におけるマイクロMHD渦流の揺らぎとキラル対称性の破れ2021

    • Author(s)
      茂木 巖
    • Organizer
      第15回日本磁気科学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] マイクロMHD渦流のゆらぎとキラル界面形成2020

    • Author(s)
      茂木 巖
    • Organizer
      日本応用物理学会2020年春季学術講演会(上智大学)
    • Related Report
      2019 Research-status Report
  • [Presentation] 回転磁気電析におけるキラル対称性の破れ2020

    • Author(s)
      茂木 巖
    • Organizer
      日本電気化学会2020年春季学術講演会(名古屋工業大学)
    • Related Report
      2019 Research-status Report
  • [Presentation] Breaking of odd magnetic-field dependence of surface chirality in magnetoelectrolysis2019

    • Author(s)
      茂木 巖
    • Organizer
      11th Int. PAMIR Conf. on Fundamental and Applied MHD, (Reims, France, July. 1-5, 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 磁気電解エッチングにおけるキラリティの磁場依存性の破れ2019

    • Author(s)
      茂木 巖
    • Organizer
      日本応用物理学会2019年秋季学術講演会(北海道大学)
    • Related Report
      2019 Research-status Report
  • [Presentation] 磁気電気化学キラリティにおけるキラル対称性の破れ2019

    • Author(s)
      茂木 巖
    • Organizer
      第14回日本磁気科学会年会(長岡市)
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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