Anisotropy and memory during cage breaking events close to a wall
Anisotropy and memory during cage breaking events close to a wall
复制标题
靠近墙壁的笼子破裂事件中的各向异性和记忆
DOI:
10.1088/0953-8984/28/50/505001
复制
发表时间:
2016
期刊:
影响因子:
--
通讯作者:
M. Schmiedeberg
中科院分区:
文献类型:
--
作者:
M. Kohl;A. Härtel;M. Schmiedeberg
The slow dynamics in a glassy hard-sphere system is dominated by cage breaking events, ie rearrangements where a particle escapes from the cage formed by its neighboring particles. We study such events for an overdamped colloidal system by the means of Brownian dynamics simulations. While it is difficult to relate cage breaking events to structural mean field results in bulk, we show that the microscopic dynamics of particles close to a wall can be related to the anisotropic two-particle density. In particular, we study cage-breaking trajectories, mean forces on a tracked particle, and the impact of the history of trajectories. Based on our simulation results, we further construct two different one-particle random-walk models—one without and one with memory incorporated—and find the local anisotropy and the history-dependence of particles as crucial ingredients to describe the escape from a cage. Finally, our detailed study of a rearrangement event close to a wall not only reveals the memory effect of cages, but leads to a deeper insight into the fundamental mechanisms of glassy dynamics.
登录
查看更多内容
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
M. Schmiedeberg;T. Haxton;S. Nagel;A. Liu
通讯作者:
A. Liu
DOI:
10.1103/physreve.92.042310
发表时间:
2015
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
A. Härtel;M. Kohl;M. Schmiedeberg
通讯作者:
M. Schmiedeberg
DOI:
--
发表时间:
1964
期刊:
影响因子:
--
作者:
J. Rowlinson
通讯作者:
J. Rowlinson
影响因子:
1.6
作者:
ERNST, MH;MACHTA, J;VANBEIJEREN, H
通讯作者:
VANBEIJEREN, H
DOI:
--
发表时间:
2007
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
A. Malijevský;S. B. Yuste;Andrés Santos;M. López de Haro
通讯作者:
M. López de Haro