QUADRUPOLAR SPECTROSCOPY OF NEMATIC LIQUID-CRYSTALS

被引：0

作者：

ERNST, RM ^{[1
]}

机构：

[1] UNIV CHICAGO,JAMES FRANCK INST,CHICAGO,IL 60637

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.46.13679

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Quadrupolar spectroscopy of weakly polar nematic liquid crystals shows temperature-dependent Debye relaxation at low megahertz frequencies. The quadrupolar technique, which is similar to dielectric spectroscopy but which probes the motions of electric quadrupoles, reveals details of the single-particle reorientation potential which complement information from dielectric studies. In particular, the results are consistent with a nematic potential which, unlike the simplest mean-field theory of the nematic state, includes higher-order terms and a strong density dependence.

引用

页码：13679 / 13686

页数：8

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