| 胆甾相与蓝相液晶的布拉格反射和旋光能力研究 |
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| 引用本文： | 窦虎,于亚楠,马红梅,孙玉宝.胆甾相与蓝相液晶的布拉格反射和旋光能力研究[J].液晶与显示,2015,30(3):381-386. |
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| 作者姓名： | 窦虎 于亚楠 马红梅 孙玉宝 |
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| 作者单位： | 河北工业大学 应用物理系, 天津 300401 |
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| 基金项目： | 国家自然科学基金(No.11304074, No.61475042) |
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| 摘 要： | 采用时域有限差分法(FDTD)研究了胆甾相液晶与蓝相液晶的旋光能力。首先计算了圆偏振光在平面态胆甾相液晶与蓝相液晶中的布拉格反射现象,从晶格结构和分子排列的角度对模拟结果做了讨论,研究了液晶折射率和螺距对布拉格反射现象的影响。其次研究了胆甾相与蓝相液晶夹在两正交偏振片间的漏光情况,用液晶的旋光能力对二者的相似和不同的现象进行了解释。
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| 关 键 词： | 蓝相 胆甾相 布拉格反射 旋光能力 |
| 收稿时间： | 2014-09-04 |
Bragg reflection and optical rotatory power of cholesteric and blue phase liquid crystal |
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| DOU Hu,YU Ya-nan,MA Hong-mei,SUN Yu-bao.Bragg reflection and optical rotatory power of cholesteric and blue phase liquid crystal[J].Chinese Journal of Liquid Crystals and Displays,2015,30(3):381-386. |
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| Authors: | DOU Hu YU Ya-nan MA Hong-mei SUN Yu-bao |
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| Affiliation: | Department of Applied Physics, Hebei University of Technology, Tianjin 300401, China |
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| Abstract: | The Bragg reflection and optical rotatory power of cholesteric liquid crystal (ChLC) and blue phase liquid crystal (BPLC) are studied using finite-difference time-domain (FDTD) method. Firstly, the Bragg reflection of ChLC and BPLC is calculated, and the simulation results are discussed from the aspects of lattice structures and molecular arrangement. The effect of refractive index and pitch of liquid crystal on the Bragg reflection is also studied. The light leakage of the ChLC and BPLC sandwiched by the crossed polarizers is calculated, and the similar and different phenomena are analyzed by the optical rotatory power of liquid crystal. |
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| Keywords: | blue phase cholesteric Bragg reflection optical rotatory power |
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