Volume 123, 2003
From the journal:

Faraday Discussions

Schematic models for dynamic yielding of sheared colloidal glasses

Matthias Fuchs†*a  and  Michael E. Catesa  

* Corresponding authors

a Department of Physics and Astronomy, The University of Edinburgh, James Clerk Maxwell Building, King's Buildings, Edinburgh, UK
E-mail: mfuchs@ics.u-strasbg.fr

Abstract

The nonlinear rheological properties of dense suspensions are discussed within simplified models, suggested by a recent first principles approach to the model of Brownian particles in a constant-velocity-gradient solvent flow. Shear thinning of colloidal fluids and dynamical yielding of colloidal glasses arise from a competition between a slowing down of structural relaxation, because of particle interactions, and enhanced decorrelation of fluctuations, caused by the shear advection of density fluctuations. A mode coupling approach is developed to explore the shear-induced suppression of particle caging and the resulting speed-up of the structural relaxation.

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Article information

DOI
https://doi.org/10.1039/B205629A
Article type
Paper
Submitted
10 Jun 2002
Accepted
21 Jun 2002
First published
10 Oct 2002

Faraday Discuss., 2003,123, 267-286

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Schematic models for dynamic yielding of sheared colloidal glasses

M. Fuchs and M. E. Cates, Faraday Discuss., 2003, 123, 267 DOI: 10.1039/B205629A

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