3 December 2003 Thermal orientational fluctuations in filled liquid crystal cell
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The liquid crystal director-colloidal particle surface interaction in filled liquid crystals causes the thermally-induced director fluctuation correlations to be screened. This is consistent with the experimentally observed reduction in the thermal director fluctuation-induced Rayleigh light scattering in filled liquid crystals. The colloid-mesogen interaction also induces director non-uniformity in filled liquid crystals, thus further modifying the spatial dependence of the director fluctuation correlations, and shifts the critical temperature at which the isotropic phase loses its stability with respect to nematic fluctuations. The shift is specifically particle-size dependent, and this will enable the phenomenon to be recognized experimentally.
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Igor P. Pinkevich, Igor P. Pinkevich, Victor Yu. Reshetnyak, Victor Yu. Reshetnyak, Oleksij Vasilyev, Oleksij Vasilyev, "Thermal orientational fluctuations in filled liquid crystal cell", Proc. SPIE 5257, Ninth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, (3 December 2003); doi: 10.1117/12.545774; https://doi.org/10.1117/12.545774

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