Related Experiment Videos
Surface reorientation induced by short light pulses in doped liquid crystals
L Lucchetti1, D Fedorenko, O Francescangeli
1Dipartimento di Fisica e Ingegneria dei Materiali and Istituto Nazionale per la Fisica delle Materia, Università di Ancona, via Brecce Bianche, 60131 Ancona, Italy. lucchetti@popcsi.unian.it
Optics Letters
|September 19, 2003
Abstract:
Fast surface reorientation induced by a single 4-ns low-energy laser pulse in dye-doped liquid crystals is reported. The reorientation is due to light-induced modification of the surface anisotropy, which affects the liquid crystal's director through the appearance of a preferred direction on the irradiated surface. The detected signals can be interpreted as being the result of light-induced desorption and adsorption of dye molecules.