2014/01/08 by I. Jánossy, Jánossy, I., K. Fodor-Csorba +7
Physics and Astronomy · #FOS: Physical sciences #Optics (physics.optics) #Soft Condensed Matter (cond-mat.soft) #cond-mat.soft #physics.optics
paper · pdf · doi:10.48550/arxiv.1401.1592
to appear in Mol. Cryst. Liq. Cryst
arxiv created 2014/01/08 · arxiv updated 2014/01/09
In a planar liquid crystal sample sandwiched between a photosensitive and a reference plate instabilities occurred, when the cell was illuminated from the reference side. The instabilities were induced both by polarized white light source and monochromatic laser beams. Static and dynamic regimes were found; for laser irradiation dynamic instability was found only in a range of polarization directions. A model, developed for monochromatic excitation, predicts that at certain thicknesses dynamic instability is forbidden. Experiments on a wedge-like cell confirmed this conclusion.