Colloidal glass transition observed in confinement

被引：130

作者：

Nugent, Carolyn R. ^{[1
]}

Edmond, Kazem V. ^{[1
]}

Patel, Hetal N. ^{[1
]}

Weeks, Eric R. ^{[1
]}

机构：

[1] Emory Univ, Dept Phys, Atlanta, GA 30322 USA

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.99.025702

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study a colloidal suspension confined between two quasiparallel walls as a model system for glass transitions in confined geometries. The suspension is a mixture of two particle sizes to prevent wall-induced crystallization. We use confocal microscopy to directly observe the motion of colloidal particles. This motion is slower in confinement, thus producing glassy behavior in a sample which is a liquid in an unconfined geometry. For higher volume fraction samples (closer to the glass transition), the onset of confinement effects occurs at larger length scales.

引用

页数：4

共 27 条

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