Abstract

The results of the optical investigation of a decay shear flow of a nematic liquid crystal are presented. The flow was produced by the varying hydrostatic pressure difference applied to the rectangular capillary. In the described experiment a quasi-stationary director motion took place. It allowed to control a pressure difference due to a measurement of an intensity of light, passing through the cell. The proposed procedure can be used to determine the shear viscosity of nematic liquid crystals.

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