RELAXATION-TIME OF CONFINED LIQUIDS UNDER SHEAR

被引：284

作者：

HU, HW ^{[1
]}

CARSON, GA ^{[1
]}

GRANICK, S ^{[1
]}

机构：

[1] UNIV ILLINOIS,DEPT MAT SCI & ENGN,URBANA,IL 61801

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.66.2758

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ultrathin films of simple nonpolar molecular fluids (3-8 segmental dimensions thick) show a strikingly long relaxation time in response to oscillatory shear when confined between mica plates at 27-degrees-C. When the shear rate exceeds this inverse time, the effective viscosity decays as an apparent power law in the shear rate, implying considerable distortion of the dynamic structure. The relaxation time is orders of magnitude longer than the Brownian relaxation time in the bulk state and may reflect collective motions induced by confinement.

引用

页码：2758 / 2761

页数：4

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