Regular structures in 5CB liquid crystals under the joint action of ac and dc voltages.
A nematic liquid crystal with high, positive dielectric anisotropy (5CB) has been studied under the influence of the combined action of a dc and an ac electric field. Broad frequency, voltage, and cell thickness ranges were considered. Pattern morphologies were identified; the thresholds and critical wave numbers were measured and analyzed as a function of frequency, dc-to-ac voltage ratio, and thickness. The current-voltage characteristics were simultaneously detected.
LaRTE-FaMAF, Universidad Nacional de Córdoba and IFEG-CONICET Medina Allende y Haya de la Torre S/N, Ciudad Universitaria, X5016LAE Córdoba, Argentina.
Luis E
LE
Aguirre
Esteban
E
Anoardo
Nándor
N
Eber
Agnes
A
Buka
D003198:Computer Simulation; D004574:Electromagnetic Fields; D050866:Liquid Crystals / Q000737:chemistry* / Q000528:radiation effects*; D008956:Models, Chemical; D008958:Models, Molecular; D008968:Molecular Conformation / Q000528:radiation effects*; D012031:Refractometry