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Nondiffusive Brownian Motion Studied by Diffusing-Wave Spectroscopy

Published online by Cambridge University Press:  21 February 2011

D. J. Pine ,
D. A. Weitz ,
D. J. Durian ,
P. N. Pusey  and
R. J. A. Tough
D. J. Pine
Affiliation:
Department of Phlysics, Haverford College, Haverford, PA 19041 Exxon Research and Engineering Co., Rt. 22 E, Annandale, NJ 08801
D. A. Weitz
Affiliation:
Exxon Research and Engineering Co., Rt. 22 E, Annandale, NJ 08801
D. J. Durian
Affiliation:
Exxon Research and Engineering Co., Rt. 22 E, Annandale, NJ 08801
P. N. Pusey
Affiliation:
Royal Signals and Radar Establishment, Malvern, Worchestershire WR14 SPS, UK
R. J. A. Tough
Affiliation:
Royal Signals and Radar Establishment, Malvern, Worchestershire WR14 SPS, UK
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Abstract

On a short time scale, Brownian particles undergo a transition from initially ballistic trajectories to diffusive motion. Hydrodynamic interactions with the surrounding fluid lead to a complex time dependence of this transition. We directly probe this transition for colloidal particles by measuring the autocorrelation function of multiply scattered light and observe the effects of the slow power-law decay of the velocity autocorrelation function.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 177: Symposium V – Macromolecular Liquids , 1989 , 225
Copyright
Copyright © Materials Research Society 1990

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References

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