Partial rejuvenation of a colloidal glass -: art. no. 032401

被引：29
|
作者：
Ozon, F
Narita, T
Knaebel, A
Debrégeas, G
Hébraud, P
Munch, JP
机构：
[1] Univ Strasbourg, LDFC, UMR 7506, F-67084 Strasbourg, France
[2] Coll France, LFO, UMR 7125, F-75231 Paris 05, France
[3] ESPCI, LPM, UMR 7615, F-75231 Paris 05, France
来源：
PHYSICAL REVIEW E | 2003年 / 68卷 / 03期
关键词：
D O I：
10.1103/PhysRevE.68.032401
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
We study the effect of shear on the aging dynamics of a colloidal suspension of synthetic clay particles. We find that a shear of amplitude gamma reduces the relaxation time measured just after the cessation of shear by a factor exp(-gamma/gamma(c)), with gamma(c)similar to5%, and is independent of the duration and the frequency of the shear. This simple law for the rejuvenation effect shows that the energy involved in colloidal rearrangements is proportional to the shear amplitude gamma rather than gamma(2), leading to an Eyring-like description of the dynamics of our system.
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页数：4
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