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Measuring a colloidal particle's interaction with a flat surface under nonequilibrium conditions

Total internal reflection microscopy with absolute position information

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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.

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Authors and Affiliations

  1. Dept. of Physics, James Franck Institute, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL 60637, USA, , , , , , US

    S.H. Behrens, J. Plewa & D.G. Grier

Authors
  1. S.H. Behrens
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  2. J. Plewa
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  3. D.G. Grier
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Additional information

Received 10 October 2002 Published online: 16 April 2003

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ID="a"Present address: Department of Polymer Physics, BASF Aktiengesellschaft, 67056 Ludwigshafen, Germany

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ID="b"Present address: Arryx. Inc., Chicago, IL 60601, USA

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Behrens, S., Plewa, J. & Grier, D. Measuring a colloidal particle's interaction with a flat surface under nonequilibrium conditions . Eur. Phys. J. E 10, 115–121 (2003). https://doi.org/10.1140/epje/e2003-00013-2

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  • DOI: https://doi.org/10.1140/epje/e2003-00013-2

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