On-off intermittency in stochastically driven electrohydrodynamic convection in nematics

被引：66

作者：

John, T

Stannarius, R

Behn, U

机构：

[1] Univ Leipzig, Inst Theoret Phys, D-04009 Leipzig, Germany

[2] Univ Leipzig, Inst Expt Phys 1, D-04009 Leipzig, Germany

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.83.749

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on-off intermittency in electroconvection of nematic liquid crystals driven by a dichotomous stochastic electric voltage. With increasing voltage amplitude we observe laminar phases of undistorted director state interrupted by shorter bursts of spatially regular stripes. Near a critical value of the amplitude the distribution of the duration of laminar phases is governed over several decades by a power law with exponent -3/2. The experimental findings agree with simulations of the linearized electrohydrodynamic equations near the sample stability threshold.

引用

页码：749 / 752

页数：4

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