Structural signatures of dynamic heterogeneities in monolayers of colloidal ellipsoids
文献类型：期刊论文
| 作者 | 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)
|
| 刊名 | Nature Communication
 |
| 出版日期 | 2014-05-08 |
| 卷号 | 5页码:3829 |
| 通讯作者邮箱 | zzy@imech.ac.cn ; yilong@ust.hk |
| 关键词 | Colloids Glass transition Structure Dynamic heterogeneity Ellipsoids Anisotropy Entropy |
| ISSN号 | 2041-1723 |
| 通讯作者 | 郑中玉 ; 韩一龙 |
| 中文摘要 | 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. |
| 学科主题 | 交叉与边缘领域的力学 ; 物理力学 |
| 分类号 | 一类 |
| 类目[WOS] | Multidisciplinary Sciences |
| 研究领域[WOS] | Science & Technology - Other Topics |
| 关键词[WOS] | GLASS-FORMING LIQUIDS ; SUPERCOOLED LIQUIDS ; ORIENTATIONAL ORDER ; JAMMING TRANSITION ; HARD ELLIPSOIDS ; CRYSTALLIZATION ; FRUSTRATION ; RELAXATION ; SIMULATION ; INSIGHTS |
| 收录类别 | SCI |
| 资助信息 | NSFC grants 11104286, 11372314, 51071166 and NBRP grant 2011CB710901 |
| 原文出处 | http://www.nature.com/ncomms/2014/140508/ncomms4829/pdf/ncomms4829.pdf |
| 语种 | 英语 |
| WOS记录号 | WOS:000337373200004 |
| 公开日期 | 2014-07-24 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/48903]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 推荐引用方式 GB/T 7714 | Zheng ZY,Ni R,Wang F,et al. Structural signatures of dynamic heterogeneities in monolayers of colloidal ellipsoids[J]. Nature Communication,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 Communication,5,3829. |
| MLA | Zheng ZY,et al."Structural signatures of dynamic heterogeneities in monolayers of colloidal ellipsoids".Nature Communication 5(2014):3829. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。