Diffusion of particles in free-standing liquid films

被引：48

作者：

Cheung, C ^{[1
]}

Hwang, YH ^{[1
]}

Wu, XL ^{[1
]}

Choi, HJ ^{[1
]}

机构：

[1] INHA UNIV,DEPT POLYMER SCI & ENGN,INCHON 402751,SOUTH KOREA

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.76.2531

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Self-diffusion and relative diffusion of hard spheres are measured in free-standing soap films using video imaging. We found the following: (1) Particle self-diffusion in the film is faster than in the three-dimensional fluid, in quantitative agreement with Saffman's calculation for diffusion in a thin sheet of fluid. (2) For a pair of particles, the average rate of separation between them appears to depend logarithmically on their initial distance. This suggests the presence of long-range hydrodynamic interaction in the film despite viscous damping al the liquid-air interfaces.

引用

页码：2531 / 2534

页数：4

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