Experiments on tracer diffusion in thin free-standing liquid-crystal films

被引：25

作者：

Bechhoefer, J ^{[1
]}

Geminard, JC ^{[1
]}

Bocquet, L ^{[1
]}

Oswald, P ^{[1
]}

机构：

[1] ECOLE NORMALE SUPER LYON,PHYS LAB,F-69364 LYON,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.79.4922

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using laser-induced photobleaching of a fluorescent tracer molecule. we study diffusion in freestanding smectic films as thin as two layers. For films four or more layers thick, the in-plane diffusion constant increases in agreement with a hydrodynamic theory outlined here. Two- and three-layer films show different behavior.

引用

页码：4922 / 4925

页数：4

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