Formation of phase grating in planar aligned cholesteric liquid crystal film

被引：0

作者：

Wu, Jin-Jei ^{[1
]}

Wu, Yeong-Shiun ^{[1
]}

Chen, Fu-Chen ^{[1
]}

Chen, Shu-Hsia ^{[1
]}

机构：

[1] Wu, Jin-Jei

[2] Wu, Yeong-Shiun

[3] Chen, Fu-Chen

[4] Chen, Shu-Hsia

来源：

Wu, J.-J. | 1600年 / Japan Society of Applied Physics卷 / 41期

关键词：

Cholesteric liquid crystals - Diffraction gratings - Electric field effects - Electric potential;

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学科分类号：

摘要：

Electric-field-induced cholesteric liquid crystal phase gratings were investigated by means of changing the film thickness-to-natural-pitch ratio d/p0 and the applied voltage. Planar parallel (180°)-, antiparallel (0°)-and twist (90°)-aligned films were fabricated. By varying the d/p0 value, we found that the stripes of the gratings could only be in two directions. It was interesting that the directions were mutually perpendicular. This device could be used as a grating switch.

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