Pressure tensor profiles at the isotropic-nematic interface

被引:13
作者
Allen, MP [1 ]
机构
[1] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England
基金
英国工程与自然科学研究理事会;
关键词
D O I
10.1016/S0009-2614(00)01207-0
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The pressure tensor profile, in the vicinity of the planar interface between isotropic liquid and nematic liquid crystal phases of rod-like molecules, is calculated using Onsager's density functional theory. Two different conventions for the transverse pressure, due respectively to Harasima and to Irving and Kirkwood, are shown to give distinguishable, but similar, forms. The equivalence of these definitions with those based on the grand potential density is clarified. The profiles, and the location of the surface of tension, depend dramatically on the orientation of the director relative to the interface. These physical differences are much larger than the ambiguities associated with the different pressure conventions. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:513 / 518
页数:6
相关论文
共 24 条
[1]   Isotropic-nematic interface of soft spherocylinders [J].
Al-Barwani, MS ;
Allen, MP .
PHYSICAL REVIEW E, 2000, 62 (05) :6706-6710
[2]  
Allen MP, 1999, MOL PHYS, V96, P1391, DOI 10.1080/00268979909483083
[3]   Molecular simulation and theory of the isotropic-nematic interface [J].
Allen, MP .
JOURNAL OF CHEMICAL PHYSICS, 2000, 112 (12) :5447-5453
[4]   COMPUTER-SIMULATION OF A TWISTED NEMATIC LIQUID-CRYSTAL [J].
ALLEN, MP ;
MASTERS, AJ .
MOLECULAR PHYSICS, 1993, 79 (02) :277-289
[5]   Tracing the phase boundaries of hard spherocylinders [J].
Bolhuis, P ;
Frenkel, D .
JOURNAL OF CHEMICAL PHYSICS, 1997, 106 (02) :666-687
[6]   NUMERICAL-SOLUTION OF THE ONSAGER PROBLEM FOR AN ISOTROPIC-NEMATIC INTERFACE [J].
CHEN, ZY ;
NOOLANDI, J .
PHYSICAL REVIEW A, 1992, 45 (04) :2389-2392
[7]   BIAXIAL EFFECT AT AN ISOTROPIC-NEMATIC INTERFACE [J].
CHEN, ZY .
PHYSICAL REVIEW E, 1993, 47 (05) :3765-3767
[8]  
DEGENNES PG, 1999, PHYSICS LIQUID CRYST
[9]  
DOI M, 1985, J APPL POLYM SCI APP, V41, P65
[10]  
HARASIMA A, 1958, ADV CHEM PHYS, V1, P203