快速高双折射率向列相液晶的分子设计与模拟计算

何 军; 张 然; 鲁兴海; 宣 丽

doi:null

您当前的位置：

首页 >

文章列表页 >

快速高双折射率向列相液晶的分子设计与模拟计算

材料物理和化学 | 更新时间：2020-08-12

- 快速高双折射率向列相液晶的分子设计与模拟计算
- Molecular Design and Simulation of Nematic Liquid Crystal of Fast Response and High Birefringence
- 液晶与显示 2009年24卷第1期页码：15-21
- 作者机构：
  
  1. 中国科学院研究生院北京,100039
  2. 中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春,130033
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： O753+.2;TB133
- 收稿日期：2008-07-04，
  
  修回日期：1900-01-02，
  
  网络出版日期：2009-02-20，
  
  纸质出版日期：2009-02-20
- 稿件说明：
移动端阅览
何军;张然;鲁兴海;宣丽. 快速高双折射率向列相液晶的分子设计与模拟计算[J]. 液晶与显示, 2009,24(1): 15-21

HE Jun;ZHANG Ran;LU Xing-hai;XUAN Li. Molecular Design and Simulation of Nematic Liquid Crystal of Fast Response and High Birefringence[J]. 液晶与显示, 2009,24(1): 15-21
何军;张然;鲁兴海;宣丽. 快速高双折射率向列相液晶的分子设计与模拟计算[J]. 液晶与显示, 2009,24(1): 15-21 DOI：

HE Jun;ZHANG Ran;LU Xing-hai;XUAN Li. Molecular Design and Simulation of Nematic Liquid Crystal of Fast Response and High Birefringence[J]. 液晶与显示, 2009,24(1): 15-21 DOI：

摘要

当前液晶自适应光学系统还不能满足校正大气湍流频率(＞40 Hz)的要求

这主要受限于LCOS器件的响应速度(10~20 ms)和位相调制量超过1

的系统要求。研制新型快速高双折射率向列相液晶材料是解决这一问题的根本方案。本文从分子结构上探讨了影响液晶粘度和双折射率的一般规律。在此基础之上

设计了两种低粘度、高双折射率的液晶分子。通过使用AM1半经验量子化学算法进行了模拟计算

预测了所设计的液晶材料的

和

值。模拟结果说明

这两种结构的液晶材料能够很好地满足自适应系统的要求。

Abstract

At present liquid crystal adaptive optical system can not meet the requirement of correcting atmospheric turbulence frequency (＞40 Hz)

which is mainly limited by response time of liquid crystal in LCOS (10~20 ms)

meanwhile

phase modulation range should exceed 1

. Hence the urgent need is to develop new nematic liquid crystal of fast response and high birefringence. This paper summarized general rules which impact the viscosity and birefringence of liquid crystal

on this basis

two liquid crystal molecules with low-viscosity

high birefringence were designed. Using the simulation of the AM1 semi-simulation quantum chemistry calculation

the values of

and

were predicted. Simulation results showed that the two liquid crystal structure satisfied the requirements of adaptive system well.

关键词

Keywords

references

. Wu Shin-Tson. High birefringence and wide nematic range bis-tolane liquid crystals [J]. Appl. Phys., 1999,73(3):344-346.

. Michael Hird, Kenneth J Toyne, John W Goodby, et al.Synthesis,mesomorphic behaviour and optical anisotropy of some novel materials for nematic mixtures of high birefringence [J]. J. Mater. Chem., 2004,14:1731-1743.

. Sebstian Gauza, Yang Zhao, Tatiana Le Cor, et al. Enhancing birefringence by doping fluorinated phenyltolanes [J]. J. Display Technology, 2006,4(2):327-332.

. Spadlo A, Dabrowski R, Dziaduszek J, et al. Liquid crystalline materials with high birefringence [J]. J. Opt. Technol., 2005,72(9):659-661.

. Wu Shin-Tson, Wu Chiung-S. A three-band model for liquid-crystal birefringence dispersion [J]. Appl. Phys., 1989,66(11):5297-5301.

. Kirsch P, Bremer M, Huber F, Lannert H. Nematic liquid crystals with a tetrafluoroethylene bridge in the mesogenic core structure [J]. Am. Chem. Soc., 2001, 123(23): 5414-5417.

. Haruyoshi Takatsu. Development and industrialization of liquid crystal materials [J]. Proc. SPIE., 2005, 5936: 59360U1-9.

. Yong Bae Kim, Kook Huh. High-speed response time of LC mixtures containing fluoro-isothiocyanato liquid crystal compounds for LCD monitor and TV applications [J]. Proc. SPIE., 2002, 4658: 67-78.

. Sekine Chizu, Ishitobi Masamitsu, Iwakura Kazunori, et al. Novel high birefringence dibenzothiophenylacetylene liquid crystals [J]. Liq. Cryst., 2002, 29(3):355-367.

. Schadt Martin. Lquid crystal materials and liquid crystal displays [J]. Annu. Rev. Mater. Sci., 1997, 27(1):305-379.

. Tarumi K, Bremer M, Geelhaar T. Recent liquid crystal material developnebt for active matrix displays [J]. Annu. Rev. Mater. Sci., 1997, 27(1): 423-441.

. Simpson S H, Richardson R M, Hanna S. Calculation of the birefringence of nematic liquid crystals at optical and infrared wavelengths [J]. Chem. Phys., 2005,123(13904): 1-11.

. Maier W, Meier G Z. A simple theory of the dielectric characteristics of homogeneous oriented crystalline liquid phases of the nematic type [J]. Z. Natureforsch, 1961, 16a: 262.

. Dietrich Demus, Takashi Inukai. Calculation of molecular, dielectric and optical properties of 4'-n-pentyl-4-cyano-biphenyl (5CB) [J]. Liq. Cryst., 1999, 26(9): 1257-1266.

. Dietrich Demus, Takashi Inukai. Quantum chemical calculations in industrial liquid crystal research [J]. Mol. Cryst. Liq. Cryst., 2003, 400(1): 39-58.

浏览量

111

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

可调谐太赫兹液晶超表面

液晶相中金纳米粒子的原位合成

多亲性液晶分子自组装研究进展

飞秒激光赋能液晶光子学

具有视角控制特性的液晶光学器件研究进展