2017 Fiscal Year Annual Research Report
乱れを制御可能な系におけるガラス転移・ジャミングの研究
| Project/Area Number |
15F15325
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| Research Institution | The University of Tokyo |
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Principal Investigator |
田中 肇 東京大学, 生産技術研究所, 教授 (60159019)
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| Co-Investigator(Kenkyū-buntansha) |
TONG HUA 東京大学, 生産技術研究所, 外国人特別研究員
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| Project Period (FY) |
2015-11-09 – 2018-03-31
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| Keywords | Grass Transition / Correlation / Order Parameter |
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| Outline of Annual Research Achievements |
1. The paper "Revealing Hidden Structural Order Controlling Both Fast and Slow Glassy Dynamics in Supercooled Liquids" is published in Phys. Rev. X.
2. We have studied "Inherent structural characteristics of amorphous solids". We introduce a microscopic order parameter Ψ characterizing the susceptibility of particle motion to infinitesimal thermal excitation, and successfully extract the inherent characteristics of apparently disordered amorphous structures and reveal the signature of nontrivial self-organization upon amorphous structure formation. Based on this order parameter, we reveal the marginal stability of jammed solids and further find a nontrivial interplay between jamming criticality and marginal stability. We also reveal the scale invariant nature of Ψ field, indicating its unique long-range correlation, which is further confirmed by percolation analysis. These universal structural features emerge as a consequence of peculiar self-organization leading to the mechanical rigidity, which may serve as a general starting point towards a coherent understanding of amorphous solids.
3. We have studied "Role of inherent states for dynamics in glassy materials". From both geometric and mechanical aspects, we clarify the relevance of inherent states for the understanding of glass transition phenomenon.
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| Research Progress Status |
29年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
29年度が最終年度であるため、記入しない。
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