Formation of a defect-free uniform lying helix in a thick cholesteric liquid crystal cell
Formation of a defect-free uniform lying helix in a thick cholesteric liquid crystal cell
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DOI：
10.7567/apex.8.071701
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发表时间：
2015-07-01
影响因子：
2.3
通讯作者：
Moritake, Hiroshi
中科院分区：
文献类型：
--
作者：
Inoue, Yo;Moritake, Hiroshi
我们报道了在厚胆甾型液晶电池中使用振荡剪切流和电场形成均匀卧螺旋（ULH）。螺旋轴垂直于胞面方向的剪切流形成。胆甾型液晶在临界剪切速率下由焦点锥形织构转变为超低密度结构。临界剪切速率与细胞厚度成反比，因此我们的方法很容易证明即使在54 μ m厚的细胞中也可以实现无缺陷的ULH。(C) 2015日本应用物理学会
We report on the formation of a uniform lying helix (ULH) in a thick cholesteric liquid crystal cell, using an oscillatory shear flow and an electric field across the cell. The helix axis was formed perpendicularly to the shear flow in the cell-plane direction. The cholesteric liquid crystal transitioned from a focal conic texture to the ULH at a critical shear rate. The critical shear rate was inversely proportional to the cell thickness, and thus our method easily demonstrated a defect-free ULH even in a 54-mu m-thick cell. (C) 2015 The Japan Society of Applied Physics