Abstract
The features of the structural transition of homeotropically oriented nematic liquid crystal (NLC) upon the interaction of coherent longitudinal and shear waves in a cell with acoustically soft boundary conditions at the ends for the frequency range, where the viscous wavelength is smaller and the elastic wavelength in NLC is larger than the mesophase layer thickness, have been experimentally investigated. The data obtained are analyzed within a model developed for this problem geometry based on a hypothesis postulating the flow mechanism of the orientational effect of ultrasound on NLC.
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