Multistable alignment states in nematic liquid crystal filled wells
Multistable alignment states in nematic liquid crystal filled wells
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DOI：
10.1063/1.2713140
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发表时间：
2007-03-12
影响因子：
4
通讯作者：
Mottram, N. J.
中科院分区：
文献类型：
--
作者：
Tsakonas, C.;Davidson, A. J.;Mottram, N. J.
对于被限制在厚度为12 μ m的层中和边长为20 - 80 μ m的方形威尔斯阱中的双折射液晶，已经观察到两种不同的、稳定的取向状态。指向矢位于层的平面内，线缺陷出现在正方形的两个角上。缺陷的位置决定了指向矢方向是穿过对角线还是平行于正方形的两个相对边。该器件是多稳态的，因为当在平面内旋转90度的倍数时，对角和平行状态都是稳定的。(c)2007年，美国物理学会。
Two distinct, stable alignment states have been observed for a nematic liquid crystal confined in a layer with thickness of 12 mu m and in square wells with sides of length between 20 and 80 mu m. The director lies in the plane of the layer and line defects occur in two corners of the squares. The positions of the defects determine whether the director orientation is across the diagonal or is parallel to two opposite edges of the square. The device is multistable because both the diagonal and parallel states are stable when rotated by multiples of 90 degrees in plane. (c) 2007 American Institute of Physics.