Light-induced gliding of the easy orientation axis of a dye-doped nematic liquid crystal


Fedorenko D., Slyusarenko K., Ouskova E., Reshetnyak V., Ha K., Karapinar R., ...Daha Fazla

PHYSICAL REVIEW E, cilt.77, 2008 (SCI İndekslerine Giren Dergi) identifier identifier identifier

Özet

We studied the effect of light-induced gliding of the easy axis of dye-doped nematic liquid crystal on an aligning polymer surface. The observed drift of the easy axis is over tens of degrees and is caused by light-induced anisotropic adsorption and/or desorption of dye molecules on or from the aligning layer in the presence of light-induced bulk torque. We present a theoretical model that explains the experimental data in terms of the light-induced changes of the adsorbed dye molecules angular distribution due to their exchange with the dye molecules from the liquid crystal bulk.