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聚合物分散液晶增强散射的理想模型
引用本文:于天池,范志新,张翠云,李婧.聚合物分散液晶增强散射的理想模型[J].光学学报,2008,29(9):1757-1760.
作者姓名:于天池  范志新  张翠云  李婧
作者单位:1. 大连交通大学数理系,辽宁,大连,116028
2. 河北工业大学应用物理系,天津,300130
基金项目:辽宁省教育厅资助项目,河北省高校重点学科建设项目
摘    要:介绍聚合物分散液晶技术新进展,应用光学原理对液晶微滴增强散射问题进行研究,提出液晶微滴最佳间距判据,液晶微滴间隔处聚合物材料光学厚度满足增反膜条件;提出液晶微滴最佳直径判据,液晶微滴直径满足双折射相消干涉条件;提出聚合物与液晶最佳配比的计算方法,应用晶体学原子堆积致密度知识给出最佳配比的计算结果.建立一种聚合物分散液晶增强散射的理想模型,进而从更基本的光学原理出发对异常散射理论模拟计算和实验上确定的液晶微滴最佳直径和聚合物与液晶最佳配比问题给出十分简单明确的理论解释.

关 键 词:光学材料  聚合物分散液晶  微滴  最佳直径  最佳配比  理想模型
收稿时间:2007/12/10

Ideal Model of Polymer Dispersed Liquid Crystal for Enhanced Scattering
Yu Tian-chi,Fan Zhi-xin,Zhang Cui-yun,Li Jing.Ideal Model of Polymer Dispersed Liquid Crystal for Enhanced Scattering[J].Acta Optica Sinica,2008,29(9):1757-1760.
Authors:Yu Tian-chi  Fan Zhi-xin  Zhang Cui-yun  Li Jing
Abstract:The new progress of polymer-dispersed liquid crystals technology is introduced, and the enhanced scattering of liquid crystal micro-droplets is studied by optical principle. The criterion is proposed for both the optimum distance and the optimum diameter of liquid crystal micro-droplets, respectively. Using the two criteria, the condition of reflection increasing film for the optical thickness of polymer located at the spacing of the adjacent liquid crystal micro-droplets, and the condition of birefringence destructive interference for the diameter of liquid crystal micro-droplets are satisfied. The method of calculating the optimum mixture ratio of polymer and liquid crystal is proposed, and the results are given according to the space filling efficiency of atomic packed in crystallology. With an ideal model of enhanced scattering of polymer-dispersed liquid crystals, the anomalous scattering computation and experimental results for the liquid crystal micro-droplets diameter, and the mixture ratio of polymer and liquid crystal are explained theoretically in the simple and clear ways.
Keywords:optical materials  polymer dispersed liquid crystal  micro-droplet  optimum diameter  optimum mixture ratio  ideal model
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