Electrical addressing of polymer stabilized hyper-twisted chiral nematic liquid crystals with interdigitated electrodes: Experiment and model
Electrical addressing of polymer stabilized hyper-twisted chiral nematic liquid crystals with interdigitated electrodes: Experiment and model
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DOI：
10.1063/1.4865558
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发表时间：
2014-02
影响因子：
4
通讯作者：
A. Lorenz;D. Gardiner;S. Morris;F. Castles;M. Qasim;S. Choi;Wook-Sung Kim;H. Coles;T. Wilkinson-T.-Wi
中科院分区：
文献类型：
--
作者：
A. Lorenz;D. Gardiner;S. Morris;F. Castles;M. Qasim;S. Choi;Wook-Sung Kim;H. Coles;T. Wilkinson-T.-Wi
研究了短节距聚合物稳定的手性向列液晶中的电光开关，并研究了挠曲电和介电耦合的相对贡献：发现聚合物稳定可以有效抑制手性向列液晶不需要的结构转变，从而增强电光性能（可见光的高光学对比度、接近理想的光学滞后、快速电光响应）。研究了具有叉指电极以电寻址液晶的测试单元。基于模拟，考虑到基于柔印电光和克尔效应的电光响应，得出了电光响应的恰当现象学描述。
Electro-optic switching in short-pitch polymer stabilized chiral nematic liquid crystals was studied and the relative contributions of flexoelectric and dielectric coupling were investigated: polymer stabilization was found to effectively suppress unwanted textural transitions of the chiral nematic liquid crystal and thereby enhance the electro-optical performance (high optical contrast for visible light, a near ideal optical hysteresis, fast electro-optic response). Test cells were studied that possessed interdigitated electrodes to electrically address the liquid crystal. Based on simulations, a well-fitted phenomenological description of the electro-optic response was derived considering both flexoelectro-optic and Kerr-effect based electro-optic response.