Regular structures in 5CB under the joint action of AC and DC voltages.

Luis Ever Aguirre ,Esteban Anoardo ,Nándor Éber 2,Ágnes Buka 2

LaRTE - FaMAF - Universidad Nacional de Córdoba and IFEG
LaRTE - FaMAF - Universidad Nacional de Córdoba and IFEG
2Institute for Solid State Physics and Optics, Wigner Research Center for Physics, Hungarian Academy of Sciences

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/AC voltage ratio and thickness. The current- voltage characteristics were simultaneously detected.


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