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Molecular Crystals and Liquid Crystals Volume 560, 2012 - Issue 1: Proceedings of the 14th International Topical Meeting: Optics of Liquid Crystals (OLC 2011): Part II of III
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Original Articles

Excitation of Rayleigh-Benard Convection in Homeotropic Nematic Liquid Crystal by a Gaussian Laser Beam from Above

J. B. Poursamad Physics & Optics Engineering group, Bonab University, Bonab, Iran
,
M. Asadpour Physics & Optics Engineering group, Bonab University, Bonab, Iran
,
K. M. Aghdami Payame noor University of Miandoab, Miandoab, Iran
,
M. Sahraei Research Institute of Applied Physics and Astronomy, University of Tabriz, Tabriz, Iran
,
R. S. Hakopyan Department of physics, Yerevan State University, Yerevan, Armenia
&
M. A. Mohtadibonab University of Bonab, Bonab, Iran
Pages 49-56 | Published online: 15 May 2012
 
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Abstract

We theoretically studied the Rayleigh-Benard convection in homeotropic nematic liquid crystal cells due to the absorption of a Gaussian light beam, which penetrates the cell normally from above. It was shown that a convection of hydrodynamic motion in nematic liquid crystals can be induced as a result of absorption Gaussian beam and consequently, can lead to hydrodynamic motion and significant director reorientation in liquid crystal cells. The results can be easily measured experimentally.

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