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Advanced study of softmatter quasicrystals and quasiperiodic tiling theory

Research Project

Project/Area Number 19K03777
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 13040:Biophysics, chemical physics and soft matter physics-related
Research InstitutionKindai University

Principal Investigator

Dotera Tomonari  近畿大学, 理工学部, 教授 (30217616)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords準結晶 / ソフトマター / 結晶学 / 分子シミュレーション / タイリング / 物性物理学
Outline of Research at the Start

本研究題目「ソフトマター準結晶と準周期タイリング理論の革新的展開」では、ソフトマター準結晶の分子シミュレーション研究から得られた新しい準周期タイリング「青銅比タイリング」をさらに拡張し、革新的な準周期タイリングの理論を構築する。結果として周期的結晶と準周期的結晶(準結晶)の新たな統一的見方を提供し、物質科学の基礎学理の発展に寄与することを目標とする。また、ソフトマテリアルの分子デザインの無限の可能性を利用して、数学、物理学、化学、結晶学、ナノテクノロジーの分野横断的発想で、従来の固体物理学の枠に収まらない予想外の秩序構造を探究し、ソフトマター準結晶の物理学を発展させる。

Outline of Final Research Achievements

Until recently, it has been believed that the most characteristic feature of quasicrystals is their once-forbidden rotational symmetry, the established examples being the 10-fold Penrose and the 8-fold Ammann-Beenker tilings. Contrary to this belief, we recently have found the 6-fold bronze-mean tiling.
In this project, by generalizing the Ammann-Beenker tiling and the bronze-mean tiling, we show an infinite number of 4-fold and 6-fold aperiodic tilings with various inflation factors including even metallic means and the metallic-mean of multiples of three. Implying that we cover two-thirds of metallic means (k=3, 4, 6, 8, 9, 10, 12, ...) as the inflation factors of new quasicrystals by using conventional square and hexagonal rotational symmetries. In the limit of these tilings, they become the square lattice or the hexagonal lattice; they are thus considered as quasiperiodic approximants to periodic crystals, and fill the gap between quasicrystals and incommensurate structures.

Academic Significance and Societal Importance of the Research Achievements

40年余り新しい金属比の準結晶タイリングは発見さなかったが、本研究によって青銅比を皮切りに無限個の金属比の準結晶タイリングが構成できることが分かったことに、本成果の学術的意義がある。そのほとんどが4回及び6回対称性を持ち、「準結晶タイリングの特徴が、従来の結晶学で許されない回転対称性を持つ」という人口に膾炙した表現が正しくないことをわかりやすく例示している。準結晶を含む結晶学の書き換えが必要で、基礎学理の革新である。このブレークスルーには、ハードマター(金属)準結晶研究の枠を超え、ソフトマター準結晶研究を遂行したことが不可欠であって、分野横断的な研究の有効性を示した点にも社会的意義がある。

Report

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

    (24 results)

All 2022 2021 2019 Other

All Int'l Joint Research (6 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (12 results) (of which Int'l Joint Research: 7 results,  Invited: 5 results) Remarks (5 results)

  • [Int'l Joint Research] University of Ljubljana/Josef Stefan Institute(スロベニア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Leeds/Loughborough University(英国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Ljubljana/Josef Stefan Institute(スロベニア)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of Leeds/Loughborough University(英国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of Ljubljana/Josef Stefan Institute(スロベニア)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of Leeds/Loughborough University(英国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Metallic-mean quasicrystals as aperiodic approximants of periodic crystals2019

    • Author(s)
      Nakakura Joichiro、Ziherl Primoz、Matsuzawa Junichi、Dotera Tomonari
    • Journal Title

      Nature Communications

      Volume: 10 Issue: 1 Pages: 1-8

    • DOI

      10.1038/s41467-019-12147-z

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 拡張HCSSペアポテンシャルを用いた新規6方準結晶のモンテカルロシミュレーション2022

    • Author(s)
      森本康太、堂寺知成
    • Organizer
      日本物理学会第77回年次大会(岡山大学・岡山理科大学オンライン)
    • Related Report
      2021 Annual Research Report
  • [Presentation] Quasiperiodic tiling and density wave pictures in hexagonal quasicrystals2021

    • Author(s)
      Tomonari Dotera, Kota Morimoto, Andrew Archer, Alastair Rucklidge
    • Organizer
      Materials Research Meeting 2021 (MRM21)(PACIFICO YOKOHAMA)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Tubingen triangle tilings formed by hard-core/square-shoulder particles2021

    • Author(s)
      Mikoto Takase, Tomonari Dotera
    • Organizer
      Materials Research Meeting 2021 (MRM21)(PACIFICO YOKOHAMA)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ハードコア-ソフトショルダー粒子系のチュービンゲン三角形タイリングの構造形成2021

    • Author(s)
      高瀬みこと、堂寺知成
    • Organizer
      第25回準結晶研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] ハードコア-ソフトショルダー粒子系のチュービンゲン三角形タイリングの構造形成2021

    • Author(s)
      高瀬みこと、堂寺知成
    • Organizer
      日本物理学会第76回年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Aperiodic tilings derived from the Ammann-Beenker tiling2019

    • Author(s)
      Joichiro Nakakura
    • Organizer
      The 14th International Conference on Quasicrystals (ICQ14) (May, Slovenia)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Metallic-mean quasicrystals: Sequences of quasicrystals that approach crystals2019

    • Author(s)
      Tomonari Dotera
    • Organizer
      The 14th International Conference on Quasicrystals (ICQ14) (May, Slovenia)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Metallic-mean quasicrystals: Sequences of quasicrystals that approach crystals2019

    • Author(s)
      Tomonari Dotera
    • Organizer
      International Workshop on Soft Matter: Analysis, Computation, and Applications (June, Jilin University, China)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Aperiodic tilings derived from the Ammann-Beenker tiling2019

    • Author(s)
      Joichiro Nakakura
    • Organizer
      Interdisciplinary Symposium for Quasicrystals and Strongly Correlated Electron Systems
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Metallic-mean quasicrystals: Sequences of quasicrystals that approach crystals2019

    • Author(s)
      Tomonari Dotera
    • Organizer
      Interdisciplinary Symposium for Quasicrystals and Strongly Correlated Electron Systems
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 2つの長さスケールを持つ斥力粒子系の結晶成長シミュレーション2019

    • Author(s)
      高瀬みこと, 堂寺知成
    • Organizer
      固液を区別するパラメタ―長距離秩序か配向秩序か―(大阪電気通信大学)
    • Related Report
      2019 Research-status Report
  • [Presentation] 金属比準結晶と近似準結晶2019

    • Author(s)
      堂寺知成
    • Organizer
      離散幾何解析とその周辺 2019
    • Related Report
      2019 Research-status Report
    • Invited
  • [Remarks] 研究室URL

    • URL

      https://softmatter.phys.kindai.ac.jp

    • Related Report
      2021 Annual Research Report
  • [Remarks] 研究室URL

    • URL

      http://softmatter.phys.kindai.ac.jp

    • Related Report
      2020 Research-status Report 2019 Research-status Report
  • [Remarks] Behind the paper, Nature Research Community

    • URL

      https://devicematerialscommunity.nature.com/channels/1618-behind-the-paper/posts/53215-metallic-mean-quasicrystals-as-aperiodic-approximants-of-periodic-crystal

    • Related Report
      2019 Research-status Report
  • [Remarks] Nature Instagram

    • URL

      https://www.instagram.com/p/B3hA9E3BtRW/

    • Related Report
      2019 Research-status Report
  • [Remarks] 中蔵丈一郎君、大学院学長賞

    • URL

      https://softmatter.phys.kindai.ac.jp/pages/news/images/nakakura.jpg

    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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