| 研究実績の概要 |
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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