Surfactant enhanced reorientation in dye-doped nematic liquid crystals
Institut Non Linéaire de Nice, UMR 6618 CNRS-UNSA
1361 Route des Lucioles, F-06560 Valbonne, Sophia Antipolis, France
2 Yerevan State University - 1 Manoogian Street, 375049 Yerevan, Armenia
Accepted: 12 July 2002
We show that a large nonlinearity in dye-doped liquid crystals is obtained for extremely low input light intensity, of the order of a few tens of and that it is mediated by the action of the photo-induced voltage on the specific surface coupling agent.
PACS: 61.30.Hn – Surface phenomena: alignment, anchoring, anchoring transitions, surface-induced layering, surface-induced ordering, wetting, prewetting transitions, and wetting transitions / 61.30.Gd – Orientational order of liquid crystals; electric and magnetic field effects on order / 42.70.Jk – Polymers and organics
© EDP Sciences, 2002