|
Vestnik SamGU. Estestvenno-Nauchnaya Ser., 2012, Issue 6(97), Pages 113–123
(Mi vsgu35)
|
|
|
|
Mechanics
Spatially modulated structures in nematic liquid crystal under oscillatory couette flow at ultralow frequencies
E. N. Kozhevnikov, Ya. V. Samoilova The Dept. of Mathematics and Business Informatics, Samara State University, Samara, 443011, Russian Federation
(published under the terms of the Creative Commons Attribution 4.0 International License)
Abstract:
The distortion of homeotropic structure of nematic liquid crystal under the influence of periodic shear at ultralow frequencies is theoretically described. It is shown that periodic shear action results in spatially modulated structure in NLC layer. Threshold shear amplitude and spacial periodicity of new molecular orientational structure are found on the base of nonlinear nematic liquid crystal hydrodynamic equations using Galerkin method. Theoretical analysis shows that at low frequencies threshold shear amplitude does not depend on frequency and the spatial period of the order of NLC layer thickness. Theoretical results are compared with experimental data.
Keywords:
nematic liquid crystal, periodic shear, spatially modulated structure, threshold amplitude.
Received: 22.02.2012 Accepted: 22.02.2012
Citation:
E. N. Kozhevnikov, Ya. V. Samoilova, “Spatially modulated structures in nematic liquid crystal under oscillatory couette flow at ultralow frequencies”, Vestnik Samarskogo Gosudarstvennogo Universiteta. Estestvenno-Nauchnaya Seriya, 2012, no. 6(97), 113–123
Linking options:
https://www.mathnet.ru/eng/vsgu35 https://www.mathnet.ru/eng/vsgu/y2012/i6/p113
|
|