Molecular simulation and theory of a liquid crystalline disclination core

被引:27
作者
Andrienko, D [1 ]
Allen, MP [1 ]
机构
[1] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England
来源
PHYSICAL REVIEW E | 2000年 / 61卷 / 01期
关键词
D O I
10.1103/PhysRevE.61.504
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Molecular simulations of a nematic liquid crystal confined Fn cylinder geometry with homeotropic anchoring have been carried out. The core structure of a disclination line defect of strength +1 has been examined, and comparison made with various theoretical treatments, which are presented in a unified way. It is found that excellent fits to the cylindrically symmetrized order tensor profiles may be obtained with appropriate parameter choices; notwithstanding this, on the time scales of the simulation, the cylindrical symmetry of the fore is broken and two defects of strength +1/2 may be resolved. PACS number(s): 61.30.Cz, 61.30.Jf, 61.20.Ja, 07.05.Tp.
引用
收藏
页码:504 / 510
页数:7
相关论文
共 28 条
  • [1] MOLECULAR GRAPHICS AND THE COMPUTER SIMULATION OF LIQUID CRYSTALS
    Allen, M. P.
    [J]. MOLECULAR SIMULATION, 1989, 2 (4-6) : 301 - 306
  • [2] Allen M.P., 1993, ADV CHEM PHYS, V86, P1, DOI [10.1002/9780470141458.ch1, DOI 10.1002/9780470141458.CH1]
  • [3] CALCULATION OF LIQUID-CRYSTAL FRANK CONSTANTS BY COMPUTER-SIMULATION
    ALLEN, MP
    FRENKEL, D
    [J]. PHYSICAL REVIEW A, 1988, 37 (05): : 1813 - 1816
  • [4] ALLEN MP, 1990, PHYS REV A, V42, P3641, DOI 10.1103/PhysRevA.42.3641
  • [5] Allen MP, 1999, MOL PHYS, V96, P1391, DOI 10.1080/00268979909483083
  • [6] SIMULATIONS USING HARD PARTICLES
    ALLEN, MP
    [J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1993, 344 (1672): : 323 - 337
  • [7] Molecular dynamics calculation of elastic constants in Gay-Berne nematic liquid crystals
    Allen, MP
    Warren, MA
    Wilson, MR
    Sauron, A
    Smith, W
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1996, 105 (07) : 2850 - 2858
  • [8] Local stability of biaxial nematic phases between two cylinders
    Biscari, P
    Virga, EG
    [J]. INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS, 1997, 32 (02) : 337 - 351
  • [9] The isotropic-nematic phase transition in uniaxial hard ellipsoid fluids: Coexistence data and the approach to the Onsager limit
    Camp, PJ
    Mason, CP
    Allen, MP
    Khare, AA
    Kofke, DA
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1996, 105 (07) : 2837 - 2849
  • [10] NON-SINGULAR DISCLINATIONS OF STRENGTH S = + 1 IN NEMATICS
    CLADIS, PE
    KLEMAN, M
    [J]. JOURNAL DE PHYSIQUE, 1972, 33 (5-6): : 591 - &