HYDRODYNAMIC INTERACTIONS IN CONCENTRATED SUSPENSIONS

被引：72
|
作者：
QIU, X
WU, XL
XUE, JZ
PINE, DJ
WEITZ, DA
CHAIKIN, PM
机构：
[1] UNIV PENN, DEPT PHYS, PHILADELPHIA, PA 19104 USA
[2] PRINCETON UNIV, DEPT PHYS, PRINCETON, NJ 08544 USA
来源：
PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 04期
关键词：
D O I：
10.1103/PhysRevLett.65.516
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the effects of hydrodynamic interactions on the diffusion of hard spheres in concentrated suspensions. Using a multiple-light-scattering technique that measures the early-time behavior, we find Deff/D0=1-(1.86±0.07), where is the volume fraction of spheres, Deff is the effective diffusion coefficient, and D0 is the free-particle diffusion coefficient. This agrees with the linear term calculated theoretically for short-time self-diffusion. The short-time diffusion coefficient is also found to be continuous across the freezing transition. © 1990 The American Physical Society.
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页码：516 / 519
页数：4
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