Excitation of Rayleigh-Benard Convection in Homeotropic Nematic Liquid Crystal by a Gaussian Laser Beam from Above, By Jafar Poursamad Bonab

Research

Title	Excitation of Rayleigh-Benard Convection in Homeotropic Nematic Liquid Crystal by a Gaussian Laser Beam from Above
Type	Article
Keywords	Gaussian light beam; nematic liquid crystal; rayleigh-benard convection; thermal anisotropy
Researchers	Jafar Poursamad Bonab، Mohammad Asadpour، Keivan Mahmoudi-Aghdami، Mostafa Sahrai، R. S. Hakopyan، Mohammad Ali Mohtadi Bonab

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.