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Surface diffusion of matter in discotic liquid crystal threads

Authors
Journal
Surface Science
0039-6028
Publisher
Elsevier
Publication Date
Volume
349
Issue
3
Identifiers
DOI: 10.1016/0039-6028(96)00041-6
Keywords
  • Liquid Crystal
  • Surface Defects
  • Surface Diffusion

Abstract

Abstract The first measurements of the surface diffusion coefficients in columnar discotic liquid crystal thread and film by an optical absorption technique are presented. A comparison of the results with the diffusion in the bulk specimen helps to introduce the number of diffusion sites in the surface and in the bulk. We propose then a structure of point defects in the mesophase. An estimation of jump frequency is deduced. The dependence of the surface diffusion versus the temperature seems in agreement with the Arrhenius law.

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