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向列相液晶中向错线和向错点自由能的计算    

Calculation of Free Energy of Disclination Lines and Disclination Points in Nematic Liquid Crystals

文献类型:期刊文献

中文题名:向列相液晶中向错线和向错点自由能的计算

英文题名:Calculation of Free Energy of Disclination Lines and Disclination Points in Nematic Liquid Crystals

作者:王玉生[1];宋纳红[2]

第一作者:王玉生

机构:[1]华北水利水电学院数学与信息科学学院,河南郑州450011;[2]河南财经学院信息学院,河南郑州450002

第一机构:华北水利水电学院数学与信息科学学院,河南郑州450011

年份:2008

卷号:23

期号:3

起止页码:261-265

中文期刊名:液晶与显示

外文期刊名:Chinese Journal of Liquid Crystals and Displays

收录:CSTPCD;;Scopus;北大核心:【北大核心2004】;CSCD:【CSCD_E2011_2012】;

基金:国家自然科学基金(No10575068);华北水利水电学院青年科研基金(NoHSQJ2005015)

语种:中文

中文关键词:指向矢;向错线;自由能

外文关键词:director field; disclination line; free energy

摘要:利用映射方法得出了计算向错线自由能公式和向错强度为m=±1的向错点自由能公式,从而弥补了挖掉奇异区域来估算自由能的不足。研究结果表明,液晶在有向错线的结构中指向矢场更多地出现正的向错强度状态。随着k24的增大,m=+1的向错点的自由能将降低,而m=-1的向错点的自由能将增大。
The free energy of disclination lines and disclination points(m=± 1)were calculated using the light of Ф-mapping method which made up shortcoming of the estimation of the free energy by digging a disclination core region. It was shown that the director field of liquid crystals with disclination structures would prefer to stay in the positive disclination strength states. Along with the increase of k24, the free energy of disclination points which disclination strength is m+1 would decrease and which disclination strength is m=-1 would increase.

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