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Propagation of Hydrodynamic Interactions in Colloidal Suspensions

Propagation of Hydrodynamic Interactions in Colloidal Suspensions We describe direct measurements of the dynamics of two colloidal spheres before hydrodynamic interactions have had time to fully develop. We find that the dynamics of the two spheres are coupled at times significantly shorter than τ ν , the time required for vorticity to diffuse between the two spheres. From the distance dependence of the measured coupling, we infer that hydrodynamic interactions develop in a sonic time scale. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review Letters American Physical Society (APS)

Propagation of Hydrodynamic Interactions in Colloidal Suspensions

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References (3)

Publisher
American Physical Society (APS)
Copyright
Copyright © 2002 The American Physical Society
ISSN
1079-7114
DOI
10.1103/PhysRevLett.88.088302
pmid
11863977
Publisher site
See Article on Publisher Site

Abstract

We describe direct measurements of the dynamics of two colloidal spheres before hydrodynamic interactions have had time to fully develop. We find that the dynamics of the two spheres are coupled at times significantly shorter than τ ν , the time required for vorticity to diffuse between the two spheres. From the distance dependence of the measured coupling, we infer that hydrodynamic interactions develop in a sonic time scale.

Journal

Physical Review Letters – American Physical Society (APS)

Published: Feb 25, 2002

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