Weakly nonlinear theory of pattern-forming systems with spontaneously broken isotropy.
Weakly nonlinear theory of pattern-forming systems with spontaneously broken isotropy.
复制标题
具有自发破缺各向同性的图案形成系统的弱非线性理论。
DOI：
10.1103/physrevlett.76.4729
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发表时间：
1996
影响因子：
8.6
通讯作者：
Pesch
中科院分区：
文献类型：
--
作者：
Rossberg;Hertrich;Kramer;Pesch
交流驱动的电对流是研究图形形成现象最丰富的系统之一。我们考虑典型的薄层几何形状与（轻微导电）NLC夹在玻璃板涂有透明电极。在电极两端施加交流电压U。通过对玻璃板进行适当的表面处理，可以将指向矢（NLC分子的优选取向）固定在边界处。特别是平面对准（planar alignment）的情况下
Ac driven electroconvection (EC) in nematic liquid crystal (NLC) layers is one of the richest systems for the study of pattern forming phenomena [1,2]. We consider the typical thin-layer geometry with the (slightly conducting) NLC sandwiched between glass plates coated with transparent electrodes. An ac voltage U is applied across the electrodes. By appropriate surface treatment of the glass plates the director ˆ (the preferred orientation of the NLC molecules) can be fixed at the boundaries. In particular the case of planar alignment (ˆ