THE MEASUREMENT OF SUBCRITICAL ELECTROCONVECTION

被引：29
|
作者：
REHBERG, I
HORNER, F
HARTUNG, G
机构：
[1] Physikalisches Institut, Universität Bayreuth, Bayreuth
来源：
JOURNAL OF STATISTICAL PHYSICS | 1991年 / 64卷 / 5-6期
关键词：
CONVECTION; ELECTROHYDRODYNAMICS; FLUCTUATIONS; SHADOWGRAPH; NOISE; STRUCTURE FUNCTION;
D O I：
10.1007/BF01048811
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Under idealized conditions, electroconvection in a nematic liquid crystal sets in at a well-defined threshold of the driving ac voltage. Fluctuating convection rolls of a small amplitude below that threshold have been observed recently. The measurement of the amplitude of these fluctuations is described in detail in this paper. It is based on averaging the light intensity signals using the structure function and a quantitative analysis of the light deflection.
引用
收藏
页码：1017 / 1023
页数：7
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