LIGHT-SCATTERING STUDY OF PHASE-TRANSITIONS IN HERETIC LIQUID-CRYSTAL FILMS

被引：10

作者：

SPECTOR, MS ^{[1
]}

LITSTER, JD ^{[1
]}

机构：

[1] MIT,DEPT PHYS,CAMBRIDGE,MA 02139

来源：

PHYSICAL REVIEW E | 1995年 / 51卷 / 05期

关键词：

D O I：

10.1103/PhysRevE.51.4698

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We report on quasielastic light-scattering experiments on fluid, hexatic, and crystal phases in thin, freely suspended liquid-crystal films. The behavior of the hexatic elastic constant in the vicinity of the fluid smectic-C to hexatic smectic-I phase transition is found to change from a continuous evolution to a discontinuous jump at concentrations near the fluid-hexatic-crystal triple point in a system of mixtures of two-liquid-crystal compounds. The smectic-I to crystal smectic-J transition is always found to be first order. These results represent the first experiments on films of homogeneously mixed liquid crystals. © 1995 The American Physical Society.

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页码：4698 / 4703

页数：6

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