Theory of instabilities of nematics under A. C electric fields : Special effects near the cut off frequencyReport as inadecuate




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Abstract : We have obtained numerical solutions for the coupled equations describing the charge density and the curvature in a nematic system under oscillating electric fields rectangular pulses or sine waves. In both cases, the resulting curve of threshold voltage versus frequency has an S shape in the vicinity of the cut off frequency. This should lead to observable hysteresis effects.

Keywords : electrical properties of substances liquid crystals organic compounds





Author: E. Dubois-Violette

Source: https://hal.archives-ouvertes.fr/



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