HEAT CONVECTION IN A NEMATIC LIQUID-CRYSTAL

被引：28
|
作者：
DUBOIS, E [1 ]
GUYON, VE [1 ]
PIERANSKI, P [1 ]
机构：
[1] UNIV PARIS S, CNRS, LAB PHYS SOLIDES, 91405 ORSAY, FRANCE
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1974年 / 26卷 / 3-4期
关键词：
D O I：
10.1080/15421407408083099
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A theoretical and experimental study of the thermal properties of a well aligned nematic Liquid Crystal in a vertical temperature gradient is presented. Due to the long time constant of the relaxation of the director and to the anisotropy of the heat conductivity, the value of the temperature gradient threshold for convective instabilities is strongly modified as compared to the isotropic case. Experiments on planar MBBA films show a drastic reduction of the threshold. A detailed description of the shape and temperature distribution of the convective rolls is given.
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页码：193 / 212
页数：20
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