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Phys Rev E Stat Nonlin Soft Matter Phys. 2012 Apr;85(4 Pt 1):041703. Epub 2012 Apr 19.

Regular structures in 5CB liquid crystals under the joint action of ac and dc voltages.

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  • 1LaRTE-FaMAF, Universidad Nacional de Córdoba and IFEG-CONICET Medina Allende y Haya de la Torre S/N, Ciudad Universitaria, X5016LAE Córdoba, Argentina.


A nematic liquid crystal with high, positive dielectric anisotropy (5CB) has been studied under the influence of the combined action of a dc and an ac electric field. Broad frequency, voltage, and cell thickness ranges were considered. Pattern morphologies were identified; the thresholds and critical wave numbers were measured and analyzed as a function of frequency, dc-to-ac voltage ratio, and thickness. The current-voltage characteristics were simultaneously detected.

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