INFLUENCE OF K(24) ON THE STRUCTURE OF NEMATIC LIQUID-CRYSTAL DROPLETS

被引：43

作者：

ZUMER, S ^{[1
]}

KRALJ, S ^{[1
]}

机构：

[1] UNIV MARIBOR, FAC EDUC, YU-62000 MARIBOR, SLOVENIA

来源：

LIQUID CRYSTALS | 1992年 / 12卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1080/02678299208029097

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A phenomenological free energy is used to describe the stable ordering of nematic liquid crystals confined to supramicron spherical cavities. In particular the effects of the saddle splay elastic constant, K24, on the equilibrium structures and phase diagram of droplets with homeotropic surface anchoring are discussed. Some structures are illustrated by the corresponding simulated polarization microscope textures. Possibilities for an experimental determination of the saddle-splay elastic constant and surface anchoring strength by studying the radial-axial structural transition in such droplets are analysed. It is shown that the K24 term in the elastic free energy stabilizes a deformed droplet structure even in the limit of the zero anchoring strength.

引用

页码：613 / 624

页数：12

共 28 条

[1] DETERMINATION OF THE LIQUID-CRYSTAL SURFACE ELASTIC-CONSTANT K24 [J].