Light-induced gliding of the easy orientation axis of a dye-doped nematic liquid crystal.
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.
Fedorenko
Denis
D
Institute of Physics, National Academy of Sciences of Ukraine, 46 Prospect Nauki, Kyiv, Ukraine. fedoren@iop.kiev.ua
Slyusarenko
Kostyantyn
K
Ouskova
Elena
E
Reshetnyak
Victor
V
Ha
KiRyong
K
Karapinar
Ridvan
R
Reznikov
Yuriy
Y