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Structural signatures of dynamic heterogeneities in monolayers of colloidal ellipsoids
Zheng ZY(郑中玉); Ni R(倪然); Wang F(王峰); Dijkstra M; Wang YR(王育人); Han YL(韩一龙); Zheng ZY(郑中玉); Han YL(韩一龙)
Source PublicationNATURE COMMUNICATIONS
2014-05-08
Volume5Pages:3829
ISSN2041-1723
Abstract

When a liquid is supercooled towards the glass transition, its dynamics drastically slows down, whereas its static structure remains relatively unchanged. Finding a structural signature of the dynamic slowing down is a major challenge, yet it is often too subtle to be uncovered. Here we discover the structural signatures for both translational and rotational dynamics in monolayers of colloidal ellipsoids by video microscopy experiments and computer simulations. The correlation lengths of the dynamic slowest-moving clusters, the static glassy clusters, the static local structural entropy and the dynamic heterogeneity follow the same power-law divergence, suggesting that the kinetic slowing down is caused by a decrease in the structural entropy and an increase in the size of the glassy cluster. Ellipsoids with different aspect ratios exhibit single- or double-step glass transitions with distinct dynamic heterogeneities. These findings demonstrate that the particle shape anisotropy has important effects on the structure and dynamics of the glass.

KeywordColloids Glass Transition Structure Dynamic Heterogeneity Ellipsoids Anisotropy Entropy
Subject Area交叉与边缘领域的力学 ; 物理力学
DOI10.1038/ncomms4829
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000337373200004
WOS KeywordGlass-forming Liquids ; Supercooled Liquids ; Orientational Order ; Jamming Transition ; Hard Ellipsoids ; Crystallization ; Frustration ; Relaxation ; Simulation ; Insights
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
Funding OrganizationNSFC grants 11104286, 11372314, 51071166 andNBRP grant 2011CB710901
DepartmentNML空间材料物理力学
Classification一类
Ranking1
Citation statistics
Cited Times:47[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48903
Collection国家微重力实验室
Corresponding AuthorZheng ZY(郑中玉); Han YL(韩一龙)
Recommended Citation
GB/T 7714
Zheng ZY,Ni R,Wang F,et al. Structural signatures of dynamic heterogeneities in monolayers of colloidal ellipsoids[J]. NATURE COMMUNICATIONS,2014,5:3829.
APA Zheng ZY.,Ni R.,Wang F.,Dijkstra M.,Wang YR.,...&Han YL.(2014).Structural signatures of dynamic heterogeneities in monolayers of colloidal ellipsoids.NATURE COMMUNICATIONS,5,3829.
MLA Zheng ZY,et al."Structural signatures of dynamic heterogeneities in monolayers of colloidal ellipsoids".NATURE COMMUNICATIONS 5(2014):3829.
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