Patterns in hybrid nematic liquid-crystal films: Topography and topology
Patterns in hybrid nematic liquid-crystal films: Topography and topology
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DOI：
10.1103/physrevlett.87.195507
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发表时间：
2001-11-05
影响因子：
8.6
通讯作者：
Takezoe, H
中科院分区：
文献类型：
--
作者：
Link, DR;Nakata, N;Takezoe, H
用偏振透射和非偏振单色反射光显微镜研究了甘油基杂化双折射液晶膜中自发图案的形成。这些观察结果表明，在1至10 μ m厚的薄膜中发现的图案是由于薄膜的组合。地形，电影中的梯度。作为对齐场的厚度，以及拓扑结构，对向量场的连接要求。研究的图案包括蜂窝图案、由2个pi壁连接的向错以及在薄膜边缘缩窄到一个点的2个pi壁。
Spontaneous pattern formation in hybrid nematic liquid-crystal films on glycerol was studied with both polarized transmission and unpolarized monochromatic reflected light microscopy. These observations reveal that the patterns that are found in 1 to 10-mum-thick films are due to a combination of film. topography, gradients in film. thickness that act as an aligning field, and topology, connectivity requirements on the vector field. The patterns studied include cellular patterns, disclinations connected by 2 pi -walls, and 2 pi -walls that narrow to a point at the edge of the films.