Rejuvenation and overaging in a colloidal glass under shear

被引：179
|
作者：
Viasnoff, V [1 ]
Lequeux, F [1 ]
机构：
[1] Ecole Super Phys & Chim Ind Ville Paris, LPM, CNRS, UMR 7615, F-75231 Paris, France
来源：
PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 06期
关键词：
D O I：
10.1103/PhysRevLett.89.065701
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report the modifications of the microscopic dynamics of a colloidal glass submitted to shear. We use multispeckle diffusing wave spectroscopy to monitor the evolution of the spontaneous slow relaxation processes after the samples have been submitted to various straining. We show that high shear rejuvenates the system and accelerates its dynamics, whereas moderate shear over-ages the system. We analyze these phenomena within the frame of the Bouchaud's trap model.
引用
收藏
页码：1 / 065701
页数：4
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