Light induced LC alignment on the isotropic non-photosensitive surface

Authors
Magyar, G West, J Reznikov, Y Yaroshchuk, O
Citation
G. Magyar et al., Light induced LC alignment on the isotropic non-photosensitive surface, MOL CRYST A, 329, 1999, pp. 683-691
Citations number
17
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS
ISSN journal
1058725X → ACNP
Volume
329
Year of publication
1999
Part
2
Pages
683 - 691
Database
ISI
SICI code
1058-725X(1999)329:<683:LILAOT>2.0.ZU;2-Y
Abstract
We observed planar alignment of nematic liquid crystal (LC) 5CB on a fused quartz surface upon illumination with polarized UV light. The axis of easy orientation is perpendicular to the polarization of the incident light. The value of the anchoring energy increases with increase of the illumination dozes up to 10(-4) erg/cm(2). We propose that the phenomena observed result s from light-induced rearrangement of the LC layer adsorbed on the quartz s urface.