Glassy behavior of two-dimensional driven granular matter(Poster session 2, New Frontiers in Colloidal Physics : A Bridge between Micro- and Macroscopic Concepts in Soft Matter)
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概要
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液体-ガラス転移の機構解明は長年の未解決問題である.近年の数値計算により,過冷却液体中に結晶的中距離秩序が存在することが示され,これが動的不均一性や緩和時間の増大の起源である可能性が示唆された.この結果を検証するため,我々は駆動下2次元粉粒体系を用いたモデル実験を行った.粒径分散が結晶化を阻害するため,長距離の構造は乱れているものの,中距離の結晶秩序が存在し,その分布が運動の遅い粒子の分布と一致することを見出した.さらに,結晶的中距離秩序の発達と緩和時間の増大との相関を観測し,ガラス化に伴うスローダイナミクスにおける結晶的中距離秩序の重要性を実証した.
- 2007-10-20
著者
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Watanabe Keiji
Institute of Industrial Science, University of Tokyo
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Tanaka Hajime
Institute of Industrial Science, University of Tokyo
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Tanaka Hajime
Institute Of Industrial Science University Of Tokyo
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Tanaka Hajime
Institute Of Industrial Science The University Of Tokyo
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Watanabe Keiji
Institute Of Industrial Science University Of Tokyo
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Watanabe Keiji
Institute For Theoretical Physics Nagoya University
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Tanaka Hajime
Institute Of Industrail Science University Of Tokyo
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