Abstract
Laser-induced hydrodynamic (LIH) motions in nematic liquid crystal (NLC) which is an initially oriented hybrid have been studied theoretically. For the direction when the flow velocity is directed out of the “flexible ribbon’s” curvature, it brings an increase of the curvature. But when the velocity has the opposite direction, we have two different cases depending on the surface anchoring energies. When there is a strong boundary condition (anchoring energy >10–1 erg/cm2) on the planar oriented wall, and there is a week boundary condition (anchoring energy ≈10–3 erg/cm2) on the homeotropic oriented wall, the molecules of a liquid crystal (LC) take the direction of the flow. “Flexible ribbon’s” curvature is reversed when is given a week boundary condition on the planar oriented wall and on the homeotropic oriented wall is given strong boundary condition.
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Translated by V.S. Hakobyan
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Hakobyan, V.S., Hakobyan, M.R. & Hakobyan, R.S. Volume Expansion Mechanism of Laser-Induced Hydrodynamic Reorientation. J. Contemp. Phys. 56, 196–200 (2021). https://doi.org/10.3103/S1068337221030026
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DOI: https://doi.org/10.3103/S1068337221030026