Thermomechanical effects in uniformly aligned dye-doped nematic liquid crystals.
We show theoretically that thermomechanical effects in dye-doped nematic liquid crystals when illuminated by laser beams, can become important and lead to molecular reorientation at intensities substantially lower than that needed for optical Fréedericksz transition. We propose a 1D model that assumes homogenous intensity distribution in the plane of the layer and is capable to describe such a thermally induced threshold lowering. We consider a particular geometry, with a linearly polarized light incident perpendicularly on a layer of homeotropically aligned dye-doped nematics.
Krimer
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Theoretische Physik, Universitaet Tuebingen, 72076 Tuebingen, Germany. Dmitry.Krimer@uni-tuebingen.de
Residori
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D002627:Chemistry, Physical / Q000379:methods; D004396:Coloring Agents / Q000737:chemistry*; D006358:Hot Temperature; D050866:Liquid Crystals; D015233:Models, Statistical; D008962:Models, Theoretical; D013314:Stress, Mechanical; D013696:Temperature; D013816:Thermodynamics
D004396:Coloring Agents