Alignment of the Uniform Lying Helix Structure in Cholesteric Liquid Crystals

Alignment of the Uniform Lying Helix Structure in Cholesteric Liquid Crystals
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胆甾型液晶中均匀螺旋结构的排列

DOI:
10.1143/jjap.48.101302
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发表时间:
2009
影响因子:
1.5
通讯作者:
Salter P
Salter P
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Salter P

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手性液晶中的均匀卧螺旋(ULH)结构,其中手性液晶的螺旋轴在两个限制衬底的平面内均匀排列,对于电光和光子应用都是感兴趣的。然而,所需的良好对准的ULH结构的形成是不平凡的。由于螺旋轴倾向于相对于表面配向方向以一定角度配向,因此两个基板都具有平面配向层的单元可以导致形成双域ULH结构。在这里,我们调查的方向和性质的域作为一个功能的现场应用。此外,我们表明,它是可能的,以获得单畴结构时,在每个基板上的取向方向是倾斜的,以便匹配的角度,螺旋形式相对于在电场施加的对齐。这提高了器件的电光对比度。
The uniform lying helix (ULH) configuration in cholesteric liquid crystals, where the helical axis of a chiral nematic is aligned uniformly in the plane of two confining substrates is of interest for both electro-optic and photonic applications. However, the formation of the well-aligned ULH structure required is non-trivial. Since the helical axis tends to align at an angle with respect to the surface alignment direction, cells where both substrates have planar alignment layers can cause the formation of a two-domain ULH structure. Here we investigate the orientation and nature of the domains as a function of field application. Further we show that it is possible to obtain mono-domain structures when the alignment directions on each substrate are skewed so as to match the angle that the helix forms with respect to the alignment at the electric field applied. This improves the electro-optic contrast of devices.
各向同性胆甾相转变附近场引起的结构变化的表面效应。
DOI: 10.1103/physreva.42.997
发表时间: 1990
期刊: Physical review. A, Atomic, molecular, and optical physics
影响因子: --
作者:
Sin;J. S. Patel
通讯作者: J. S. Patel
基于介电各向异性符号变化的胆甾型弯曲电的线性电光效应
DOI: 10.1063/1.358523
发表时间: 1994
影响因子: 3.2
作者:
P. Rudquist;M. Buivydas;L. Komitov;S. Lagerwall
通讯作者: S. Lagerwall
DOI: 10.1080/026782998207127
发表时间: 1998-03-01
期刊: LIQUID CRYSTALS
影响因子: 2.2
作者:
Rudquist, P;Komitov, L;Lagerwall, ST
通讯作者: Lagerwall, ST
DOI: 10.1080/15421407208083575
发表时间: 1972-01-01
影响因子: 0.7
作者:
CLADIS, PE;KLEMAN, M
通讯作者: KLEMAN, M