[1]王必利.向列相液晶由外场引起的相变[J].南京师大学报(自然科学版),2006,29(01):34-38.
 Wang Bili,Liu Hong.Phase Transition of Nematic Liquid Crystal Induced by External Magnetic Field[J].Journal of Nanjing Normal University(Natural Science Edition),2006,29(01):34-38.
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向列相液晶由外场引起的相变()
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《南京师大学报(自然科学版)》[ISSN:1001-4616/CN:32-1239/N]

卷:
第29卷
期数:
2006年01期
页码:
34-38
栏目:
物理学
出版日期:
2006-03-30

文章信息/Info

Title:
Phase Transition of Nematic Liquid Crystal Induced by External Magnetic Field
作者:
王必利1 2 刘红1
( 1. 南京师范大学物理科学与技术学院, 江苏南京210097 )
( 2. 盐城师范学院物理系, 江苏盐城224002)
Author(s):
Wang Bili 1 2 Liu Hong1
( 1. S ch ool of Phys ical Science and T echnology, Nan jing Norm alU n ivers ity, N an jing 210097, C h ina)
( 2. Departm en t of Phys ics, Yan cheng T each ers College, Yancheng 224002, Ch ina)
关键词:
向列相液晶 相变理论 外场 相互作用能 平均场理论
Keywords:
nem a tic liqu id c rystal phase transition theo ry ex ternal fie ld interaction energy m ean fie ld  theory
分类号:
O753.2
摘要:
利用一刚性液晶分子简化模型,将分子间相互作用抽象为棒与棒间相互作用的叠加,并考虑到外场的作用,得到系统的相图.结果表明,由于外场的诱导作用,对于单轴性分子,系统可在较高温度下诱导出准单轴相.增加分子的双轴性,可使系统在较高温度下诱导出准双轴相,降低温度,系统连续地进入双轴相.
Abstract:
U sing a simp lem ode l o f rod- like liqu id crysta l( LC) mo lecu le, an inte raction be tw een arbitrary shape r ig id m o lecu les is considered as the superposition of rod- to-rod inte ractions. W ith the consideration o f an ex terna lm agnetic field, a phase diagram is obtained. The resu lt show s that because of the exte rnal field, the un iax ia l shape m olecu les w ill form a pa ra-un ia ix al nem atic phase at h igher tem pe ra ture. Increasing biax ia lity ofm o lecu lar shape, the system w ill fo rm a pa ra-biax ia l nem atic phase at higher temperature. Decreasing tem perature, the system w ill continuously enter into no rm al biax ia l phase.

参考文献/References:

[ 1] Pa lffy-Muhoray P, Dunmur D A. Field- induced order in nema tic liquid cry sta ls[ J]. M o l C ry st L iq C ry st, 1983, 97: 337- 347.
[ 2] Gram sbe rgen E F, Long a I, De JeuW H. Landau theory o f the nem atic- iso trop ic phase transition[ J] . Phys Rev Lett, 1986, 4: 199-201.
[ 3] Rem ler D K, H aym et A D J. Phase transitions in nem atic liqu id srysta ls: am ean- fie ld theory o f the isotropic, uniax ia,l and b iax ial phases[ J] . J Phys Chem, 1986, 90: 5426- 5430.
[ 4] Er isken B J, Berge rsen B, Palffy-M uho ray P. Phase behav iour o f nam atics in the presence o f e lectr ic and magnetic fie lds [ J] . M o l Cryst L iq Cryst, 1987, 148: 45- 59.
[ 5] 刘红, 王慧. 双轴向列相液晶的相变理论[ J]. 物理学报, 2005, 54( 3) : 1306-1312.

相似文献/References:

[1]王慧,刘红.向列相液晶由分子相互作用引起的相变[J].南京师大学报(自然科学版),2004,27(03):50.
 Wang Hui,Liu Hong.Phase Transition Induced by Molecular Interaction in Nematic Liquid Crystal[J].Journal of Nanjing Normal University(Natural Science Edition),2004,27(01):50.

备注/Memo

备注/Memo:
作者简介: 王必利, 1980- , 硕士研究生, 主要从事液晶相变理论的学习与研究. E-m ail: w ang-bili@ yahoo. com. cn
通讯联系人: 刘红, 女, 1958- , 教授, 主要从事液晶物理理论的教学与研究. E-m ail: l iuh ong@ n jnu. edu. cn
更新日期/Last Update: 2013-05-05