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Issue 7, 2010
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Stress relaxation in aging soft colloidal glasses

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Abstract

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.

Graphical abstract: Stress relaxation in aging soft colloidal glasses

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Article information


Submitted
07 Aug 2009
Accepted
05 Jan 2010
First published
09 Feb 2010

Soft Matter, 2010,6, 1462-1466
Article type
Paper

Stress relaxation in aging soft colloidal glasses

R. Bandyopadhyay, P. H. Mohan and Y. M. Joshi, Soft Matter, 2010, 6, 1462
DOI: 10.1039/B916342E

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