High‐Frequency Changes in the Orientation of Nematic Liquid Crystals in Radio Frequency Crossed Electric Fields.

Autor: Klement'ev, V. M., Trashkeev, S. I., Statsenko, P. A., Vahnurov, T. D.
Předmět:
Zdroj: Journal of Applied Mechanics & Technical Physics; Nov/Dec2004, Vol. 45 Issue 6, p805-817, 13p
Abstrakt: The orientational dynamics of the director of a nematic liquid crystal located in radio frequency crossed electric fields were studied by numerical calculations and experimentally. This system is shown to be a physical object of nonlinear dynamics. Depending on the parameters of the problem, the following types of states of the director were observed: stationary (an analog of the nonthreshold Freedericksz transition), periodic, quasiperiodic (multimode), and stochastic of the strange attractor type. In the calculations, all states were obtained by solving a deterministic system of two time-dependent nonlinear differential equations of the first order with no electrohydrodynamic terms. All types of solutions obtained, including stochastic ones, were observed experimentally. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index