Effective Rotational Viscosity of Vertical Alignment Nematic Liquid Crystal Cells

被引：0
|
作者：
Iwata, Yosuke [1 ]
Naito, Hiroyoshi [1 ,2 ]
Ichinose, Hideo [3 ]
Klasen-Memmer, Melanie [4 ]
Tarumi, Kazuaki [4 ]
机构：
[1] Osaka Prefecture Univ, Dept Phys & Elect, Sakai, Osaka 5998531, Japan
[2] Osaka Prefecture Univ, Res Inst Mol Elect Devices, Sakai, Osaka 5998531, Japan
[3] Merck Ltd, Liquid Crystals Div, Kanagawa, Japan
[4] Merck KGaA, Liquid Crystals Div, Darmstadt, Germany
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2010年 / 516卷
关键词：
Effective rotational viscosity; flow effects; negative dielectric anisotropy; nematic liquid crystal; vertical alignment; NEGATIVE DIELECTRIC ANISOTROPY; TRANSIENT CURRENT; FLUIDS;
D O I：
10.1080/15421400903409432
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An effective rotational viscosity of vertical alignment (homeotropic) nematic liquid crystal (NLC) cells with negative dielectric anisotropy is derived from a theory of NLCs in which flow effects under the free-slip boundary condition are taken into account. The effective rotational viscosity is a function of the Leslie viscosity coefficients and is much smaller than the rotational viscosity at the initial stage of the director reorientation induced by external electric field to the NLC cells. This is the origin of fast response of vertical alignment of NLC cells.
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页码：228 / 232
页数：5
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