Molecular orientations at interfaces of nematic liquid crystals.

DOI Web Site
  • KIMURA Hatsuo
    Department of Applied Physics, Faculty of Engineering, Nagoya University

Bibliographic Information

Other Title
  • ネマチック液晶の界面における分子配向
  • ネマチック エキショウ ノ カイメン ニ オケル ブンシ ハイコウ

Search this article

Description

The tensions for the nematic free surface and the nematic-isotropic (N-I) interface are calculated in the mean field approximation in the system of rod-like molecules interacting via attraction as well as hard-core repulsion. It is found that the excluded volume effect favors the normal alignment of molecules at the free surface, while it favors the planar orientation at the N-I interface. The molecular orientations observed at the interfaces such as (1) transition between the normal and tilted orientations at the free surface of 4-methoxybenzylidene-4′-butylaniline (MBBA) and 4-ethoxybenzylidene-4′-butylaniline (EBBA), (2) different orientations of 5CB molecules at the free surface (normal) and the N-I interface (tilted), are well explained as effects of a counterbalance between the repulsive and attractive intermolecular forces.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 43 (4), 177-183, 1986

    The Society of Polymer Science, Japan

Keywords

Details 詳細情報について

Report a problem

Back to top