TIME-DEPENDENT SELF-DIFFUSION OF BROWNIAN PARTICLES WITH SQUARE-WELL INTERACTION

被引：12

作者：

CICHOCKI, B

FELDERHOF, BU

机构：

[1] RHEIN WESTFAL TH AACHEN,INST THEORET PHYS A,TEMPLERGRABEN 55,W-5100 AACHEN,GERMANY

[2] WARSAW UNIV,INST THEORET PHYS,PL-00618 WARSAW,POLAND

[3] POLISH ACAD SCI,INST FUNDAMENTAL TECHNOL RES,PL-00049 WARSAW,POLAND

来源：

LANGMUIR | 1992年 / 8卷 / 12期

关键词：

D O I：

10.1021/la00048a009

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We study the time-dependent self-diffusion coefficient for a semidilute suspension of spherical Brownian particles interacting via a square well potential. Under neglect of hydrodynamic interactions, we derive an exact expression for the Fourier transform of the memory function, valid to first order in the volume fraction. We analyze the time dependence of the memory function and the corresponding distribution of relaxation times. We compare with simple approximations involving a small number of parameters which can be determined by calculation.

引用

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页码：2889 / 2897

页数：9

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