Measurement of the hydrodynamic corrections to the Brownian motion of two colloidal spheres

被引：120

作者：

Crocker, JC ^{[1
]}

机构：

[1] UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

来源：

JOURNAL OF CHEMICAL PHYSICS | 1997年 / 106卷 / 07期

关键词：

D O I：

10.1063/1.473381

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The hydrodynamic coupling between two isolated 0.97 mu m diameter polystyrene spheres is measured by constructing their Brownian motion using digital video microscopy. Blinking optical tweezers are used to facilitate data collection by positioning the spheres in the microscope's focal plane and in close proximity to one another. The observed separation dependence of the spheres' relative and center of mass diffusion coefficients agree with that predicted by low Reynolds number hydrodynamics and the Stokes-Einstein relation. (C) 1997 American Institute of Physics.

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页码：2837 / 2840

页数：4

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