文章基本信息

标题：Rigidity percolation and the spatial heterogeneity of soft modes in disordered materials
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作者：Vanessa K. de Souza ; Peter Harrowell
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2009
卷号：106
期号：36
页码：15136-15141
DOI：10.1073/pnas.0901112106
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：We show how the spatial character of unconstrained motion in a network of bonds can be directly inferred from the topological arrangement of constraints. Relaxation time scales of these soft modes are determined, and from this information we generate spatial maps of the heterogeneous distribution of relaxation times in the disordered network. We show that the nature of the dynamic heterogeneity and its sensitivity to changes in bond configuration depends dramatically on the proximity of the system to the rigidity percolation point.
关键词：dynamic heterogeneity ; glass transition ; inherent structure ; local mode ; supercooled liquid