LASER-INDUCED CONFIGURATIONAL TRANSITION IN LIQUID-CRYSTALS

Authors
HU GJ PALFFYMUHORAY P
Citation
Gj. Hu et P. Palffymuhoray, LASER-INDUCED CONFIGURATIONAL TRANSITION IN LIQUID-CRYSTALS, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 304, 1997, pp. 447
Citations number
5
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
304
Year of publication
1997
Database
ISI
SICI code
1058-725X(1997)304:<447:LCTIL>2.0.ZU;2-V
Abstract
We have investigated the reorientation of NLC In thermal gradient fiel d. The nonuniform temperature field is produced by focusing He-Ne lase r on a dye doped homeotropically aligned LC cell. A new physical mecha nism is proposed, where the reorientation is resulting from the surfac e torque produced by order-electric effect. The calculation of free en ergy shows this configurational transition is second order. The theore tic analysis and experimental observation of reorientation induced by angular momentum of light field in dye doped NLC are also reported.