Pseudomolecular models for nematic liquid crystals

被引：14

作者：

Barbero, G ^{[1
]}

Evangelista, LR ^{[1
]}

机构：

[1] POLITECN TORINO, DIPARTIMENTO FIS, I-10129 TURIN, ITALY

来源：

PHYSICAL REVIEW E | 1997年 / 56卷 / 05期

关键词：

D O I：

10.1103/PhysRevE.56.6189

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：

The limits of the pseudomolecular approach to evaluate the elastic properties of nematic liquid crystals are critically analyzed. We discuss the importance of the uniformly convergent series entering into this description. If these series are not uniformly convergent, the elastic constants evaluated in this manner are meaningless. A special kind of mixing of Maier-Saupe and Nehring-Saupe interaction laws is analyzed. We show that the splay-bend elastic constant has a nonmonotonic behavior with respect to the mixing factor. This result indicates that the subsurface deformations, if any, are not only due to the splay-bend term.

引用

页码：6189 / 6192

页数：4

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