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Coarsening of a Quiescent Electrorheological Fluid II: Theory

Published online by Cambridge University Press:  15 February 2011

Thomas C. Halsey
Thomas C. Halsey*
Affiliation:
The James Franck Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637
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Abstract

The coarsening observed orthogonal to the field lines in light scattering studies of a quiescent electrorhcological fluid during the “liquid-solid” phase transition can be qualitatively understood using the thermal mechanism of chain interaction proposed by Halsey and Toor. By analyzing fluctuations in the interaction between chains, we predict a power-law increase of the column width with time, with a time constant that decreases as a power of the electric field. Lubrication forces between the particles may control the time scale of these fluctuations. These predictions are in good accord with light scattering measurements.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 289: Symposium M – Flow and Microstructure of Dense Suspensions , 1992 , 57
Copyright
Copyright © Materials Research Society 1993

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