SPONTANEOUS UNDULATION OF EQUILIBRIUM INTERFACES WITH POSITIVE SURFACE STIFFNESS

被引：7

作者：

GALATOLA, P

FOURNIER, JB

DURAND, G

机构：

[1] Laboratoire de Physique des Solides, Université Paris-Sud, Bâtiment 510

[2] Dipartimento di Fisica, Politencnico di Torino, I-10129 Torino

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.73.2212

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report experimental evidence of spontaneous undulations at static phase boundaries stabilized by a thermal gradient g and a positive surface stiffness. These periodic undulations are observed at the interface between a smectic-C phase and its isotropic or nematic melt. We show that the mechanism driving this instability is the coupling between the surface tension anisotropy and the orientational degree of freedom of the liquid crystal. The period scales as g(-1/3), as in the usual Herring instability.

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页码：2212 / 2215

页数：4

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