2022 Fiscal Year Final Research Report
Universality in the dynamic heterogeneities and pseudo isotropic phases
Project/Area Number |
20H01869
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 13040:Biophysics, chemical physics and soft matter physics-related
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Research Institution | Kyoto University |
Principal Investigator |
Yamamoto Jun 京都大学, 理学研究科, 教授 (10200809)
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Keywords | fluctuation / Dynamic heterogenety / Quasi isotropic / Glass / Gel |
Outline of Final Research Achievements |
In the glassy or gel state, materials have perfect isotropic symmetry, are transparent, and do not have an internal structure like liquid crystals or crystalline materials. For this reason, it is not possible to investigate their internal structure by ordinary optical microscopic observation. On the other hand, in glass-forming materials, it is known that during the process of cooling from a high-temperature liquid state, some parts of the material become more mobile while others become less mobile. On the other hand, in gels, the polymer network is bound near the cross-linking point, which reduces mobility and makes it difficult for solvent molecules to move. Thus, even if physical quantities such as density, concentration, and orientation are uniform within a material, spatial heterogeneity in mobility may appear, which is called "dynamic heterogeneity.
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Free Research Field |
ソフトマター
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Academic Significance and Societal Importance of the Research Achievements |
揺らぎ顕微鏡は、現存する光学顕微鏡では捉えられない物理量を可視化する新しいツールである。そこで、粘弾性その場観察装置を活かして、印加力学場による動的階層構造変化との関連性を観察・整理して、基礎科学的な視点からの材料の力学物性の設計・開発に役立てるとともに、最終的には力学物性に相関がある病理検査や医療応用、また製品開発や不良品検査が可能な、汎用顕微鏡としてのポータビリティ・簡易操作を可能とする開発にも研究期間の後半にチャレンジする。
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