Dynamics of interacting Brownian particles in concentrated colloidal suspensions

被引：11

作者：

Xia, Hui ^{[1
]}

Ishii, Katsuhiro ^{[2
]}

Iwaii, Toshiaki ^{[3
]}

Li, Hongjian ^{[1
]}

Yang, Bingchu ^{[1
]}

机构：

[1] Cent S Univ, Coll Phys Sci & Technol, Changsha 410083, Peoples R China

[2] Grad Sch Creat New Photon Ind, Hamamatsu, Shizuoka 4311202, Japan

[3] Tokyo Univ Agr & Technol, Inst Symbiot Sci & Technol, Koganei, Tokyo 1848588, Japan

来源：

APPLIED OPTICS | 2008年 / 47卷 / 09期

关键词：

D O I：

10.1364/AO.47.001257

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We are concerned with dynamic properties of interacting Brownian particles in concentrated colloidal suspensions. An effective diffusion coefficient measured by the modulated in phase low-coherence dynamic light scattering technique is investigated as a function of the volume fraction. The experimental results are compared with the numerical ones calculated under both the Cohen-de Schepper approximation for hydrodynamic interaction and the Percus-Yevick approximations for structural effect. It is confirmed that the Brownian motion of particles in the range of volume fraction from 0.01 to 0.2 is mainly dominated by the hydrodynamic interaction rather than the structural effect, which can be described well by the Cohen-de Schepper approximation. (c) 2008 Optical Society of America.

引用

页码：1257 / 1262

页数：6

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