Lower operation voltage in dual-frequency cholesteric liquid crystals based on the thermodielectric effect

被引：28

作者：

Hsiao, Yu-Cheng ^{[1
]}

Lee, Wei ^{[2
]}

机构：

[1] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[2] Natl Chiao Tung Univ, Coll Photon, Inst Imaging & Biomed Photon, Tainan 71150, Taiwan

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 20期

关键词：

PHOTONIC STRUCTURE; LIGHT SHUTTERS; MODULATION;

D O I：

10.1364/OE.21.023927

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Dual-frequency cholesteric liquid crystal (DFCLC) devices characteristically require high operation voltage, which hinders their further development in thin-film-transistor driving. Here we report on a lower-voltage switching method based on the thermodielectric effect. This technique entails applying a high-frequency voltage to occasion dielectric oscillation heating so to induce the increase in crossover frequency. The subsequent change in dielectric anisotropy of the DFCLC allows the switching, with a lower operation voltage, from the planar state to the focal conic or homeotropic state. The temperature rise incurred by the dielectric heating is described. (C)2013 Optical Society of America

引用

页码：23927 / 23933

页数：7

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