SURFACE TRANSITIONS IN NEMATIC LIQUID-CRYSTALS ORIENTED WITH LANGMUIR-BLODGETT-FILMS

Authors
ALEXEIONESCU AL BARBERO G IGNATOV A MIRALDI E
Citation
Al. Alexeionescu et al., SURFACE TRANSITIONS IN NEMATIC LIQUID-CRYSTALS ORIENTED WITH LANGMUIR-BLODGETT-FILMS, Applied physics. A, Solids and surfaces, 56(5), 1993, pp. 453-455
Citations number
26
Categorie Soggetti
Physics, Applied
Journal title
Applied physics. A, Solids and surfaces → ACNP
ISSN journal
07217250
Volume
56
Issue
5
Year of publication
1993
Pages
453 - 455
Database
ISI
SICI code
0721-7250(1993)56:5<453:STINLO>2.0.ZU;2-J
Abstract
In this paper two types of surface transitions in nematic liquid cryst als are theoretically analyzed with a simple model in which the anchor ing energy is the result of both steric and electric interactions. The physical model is proper to explain both the transition temperature e xperimentally observed in homeotropically aligned nematic liquid cryst als, and the change in the mean molecular direction due to the variati on of the number of surfactant films, piled on the boundary surfaces w ith the Langmuir-Blodgett technique.