Nondiffusive Brownian motion studied by diffusing-wave spectroscopy

D. A. Weitz; D. J. Pine; P. N. Pusey; R. J A Tough

doi:10.1103/PhysRevLett.63.1747

Nondiffusive Brownian motion studied by diffusing-wave spectroscopy

D. A. Weitz, D. J. Pine, P. N. Pusey, R. J A Tough

Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

On a short time scale, Brownian particles undergo a transtion from the initial 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, transmitted light. We show that a quantitative interpretation is possible because the transport of the light is diffusive, resolving a conflict in previous measurements.

Original language	English (US)
Pages (from-to)	1747-1750
Number of pages	4
Journal	Physical Review Letters
Volume	63
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.63.1747
State	Published - 1989

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.63.1747

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title = "Nondiffusive Brownian motion studied by diffusing-wave spectroscopy",

abstract = "On a short time scale, Brownian particles undergo a transtion from the initial 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, transmitted light. We show that a quantitative interpretation is possible because the transport of the light is diffusive, resolving a conflict in previous measurements.",

author = "Weitz, {D. A.} and Pine, {D. J.} and Pusey, {P. N.} and Tough, {R. J A}",

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Nondiffusive Brownian motion studied by diffusing-wave spectroscopy

Abstract

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