Pure Noise-Induced Pattern Formations in a Nematic Liquid Crystal
Pure Noise-Induced Pattern Formations in a Nematic Liquid Crystal
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DOI：
10.1143/jpsj.78.043601
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发表时间：
2009-03
影响因子：
1.7
通讯作者：
Jong-Hoon Huh;S. Kai
中科院分区：
文献类型：
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作者：
Jong-Hoon Huh;S. Kai
我们报告了纯噪声诱导的模式形成在同向异性排列的向列液晶。彩色噪声和白噪声分别诱导出了Williams域和条纹图案，并且发现了与外部噪声相关时间无关的Fredericks跃迁。此外，研究了正则（正弦）场与噪声叠加时的阈值行为，以了解噪声在驱动噪声诱导模式和转换机制中的内在作用。
We report pure noise-induced pattern formations in a homeotropically aligned nematic liquid crystal. Williams domains and stripe patterns are induced by colored and white noises, respectively, and the Fredericks transition is also found, which has no dependence on correlation time of the external noise. Furthermore, threshold behavior in the presence of a regular (sinusoidal) field superposed with the noise was investigated to understand the intrinsic role of the noise on the mechanisms driving noise-induced patterns and transitions.