Measuring a colloidal particle's interaction with a flat surface under nonequilibrium conditions |
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| Authors: | S.H. Behrens J. Plewa D.G. Grier |
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| Affiliation: | (1) Dept. of Physics, James Franck Institute, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL 60637, USA, US |
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| Abstract: | ![]()
A new and general approach is proposed to analyze the dynamics of a colloidal particle interacting with a nearby wall. This analysis can be used to determine the acting forces even when the system is non-stationary. As an illustration, we use total internal reflection microscopy to investigate the forces acting on a polystyrene sulfate latex particle as it is receding from a charged glass surface. Received 10 October 2002 Published online: 16 April 2003 RID="a" ID="a"Present address: Department of Polymer Physics, BASF Aktiengesellschaft, 67056 Ludwigshafen, Germany RID="b" ID="b"Present address: Arryx. Inc., Chicago, IL 60601, USA |
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| Keywords: | PACS. 82.70.Dd Colloids – 05.40.-a Fluctuation phenomena, random processes, noise, and Brownian motion |
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