Reversible orientation first-order transitions induced in a nematic liquid crystal by a spatially limited light beam and a low-frequency electric field

Autor: Zolot'ko, A.S., Smaev, M.P., Kitaeva, V.F., Barnik, M.I.
Zdroj: Quantum Electronics; February 2005, Vol. 34 Issue: 12 p1151-1156, 6p
Abstrakt: A new type of reversible orientation first-order transitions in a nematic liquid crystal (NLC) in the optical and low-frequency electric fields is studied experimentally and theoretically. It is shown that these transitions, characterised by a distinct bistability of the director field both upon variation of the light beam power P (the low-frequency electric-field voltage U = const) and the electric-field voltage U (P = const), are related to a finite diameter of the light beam and the oblique incidence of the beam on the NLC.
Databáze: Supplemental Index