Stress relaxation in aging soft colloidal glasses

被引：47

作者：

Bandyopadhyay, Ranjini ^{[1
]}

Mohan, P. Harsha ^{[1
]}

Joshi, Yogesh M. ^{[2
]}

机构：

[1] Raman Res Inst, Bangalore 560080, Karnataka, India

[2] Indian Inst Technol, Dept Chem Engn, Kanpur 208016, Uttar Pradesh, India

来源：

SOFT MATTER | 2010年 / 6卷 / 07期

关键词：

BUBBLE DYNAMICS; SUSPENSIONS; RHEOLOGY; BEHAVIOR; LAPONITE;

D O I：

10.1039/b916342e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

We investigate the stress relaxation behavior on the application of step strains to aging aqueous suspensions of the synthetic clay Laponite. The stress exhibits a two-step decay, from which the slow relaxation modes are extracted as functions of the sample ages and applied step strain deformations. Interestingly, the slow time scales that we estimate show a dramatic enhancement with increasing strain amplitudes. We argue that the system ends up exploring the deeper sections of its energy landscape following the application of the step strain.

引用

页码：1462 / 1466

页数：5

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