INFLUENCE OF THE MICROTOPOGRAPHY OF THE SIO COVERED BY PVA LAYERS ON THE TILT ANGLE OF LIQUID-CRYSTALS

Authors
MOLDOVAN R FRUNZA S BEICA T BARBERO G
Citation
R. Moldovan et al., INFLUENCE OF THE MICROTOPOGRAPHY OF THE SIO COVERED BY PVA LAYERS ON THE TILT ANGLE OF LIQUID-CRYSTALS, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 257, 1994, pp. 125-130
Citations number
11
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
257
Year of publication
1994
Pages
125 - 130
Database
ISI
SICI code
1058-725X(1994)257:<125:IOTMOT>2.0.ZU;2-H
Abstract
An evaluation of the tilt angle variation observed recently when unrub bed polyvinylic alcohol is deposited on obliquely evaporated SiO layer s is presented. The method of calculation supposes that the variation of the tilt angle is due to the modification of the initial topography of SiO during the coverage process with the polymeric film. The Lapla ce equation was obtained by minimizing the elastic energy of the syste m in the uniconstant approximation and was analytically solved. The fo und variation of the tilt angle is in good agreement with the experime ntally observed one.