| 液晶的转动粘质系数的测试原理与方法 |
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| 引用本文： | 王琼华.液晶的转动粘质系数的测试原理与方法[J].光子学报,2005,34(11):1728-1731. |
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| 作者姓名： | 王琼华 |
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| 作者单位： | 四川大学电子信息学院,成都,610064 |
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| 摘 要： | 液晶的转动粘质度是液晶用于显示和通讯的重要物理参量.本文设计开发了基于微机的液晶参数测试光学系统，在该系统上研究了液晶的转动粘质系数的测试原理与方法：通过测试液晶盒在偏置电压下相位驰预时间，推导出转动粘质系数的值.测试Merck公司的 E7液晶的转动粘质系数随温度变化的曲线，进行了理论拟合，测试结果与理论符合得很好.通过分析另一系统对液晶介质常数随温度变化的曲线的测试结果，验证了该测试原理与方法的正确性.该测试方法具有简单、自动化的特点.
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| 关 键 词： | 液晶 转动粘质系数 介质常数 展曲弹性系数 测试 |
| 收稿时间： | 2005-03-14 |
Measurement Principle and Method for Liquid Crystal's Rotational Viscosity Coefficient |
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| Wang Qionghua.Measurement Principle and Method for Liquid Crystal''''s Rotational Viscosity Coefficient[J].Acta Photonica Sinica,2005,34(11):1728-1731. |
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| Authors: | Wang Qionghua |
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| Institution: | School of Electronics and Information Engineering, Sichuan University ,Chengdu 610064 |
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| Abstract: | Rotational viscosity is one of important liquid crystal′s physical properties for display and telecommunication industries.The measurement method and principle of the temperature dependence of rotational viscosity coefficient of nematic liquid crystal were investigated on a personal computer-based optical system developed by us.Rotational viscosity coefficient was caculated from the phase decay time tested on the optical system.The data of the temperature dependence of rotational viscosity coefficient of a typical LC material―a Merck nematic E7 mixture were given,and experimental results agree with the theory well,which verifies the correction of the principle.The method is simple and automatic. |
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| Keywords: | Liquid crystal Rotational viscosity coefficient Dielectric constant Splay elastic constant Measurement |
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