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Open AccessArticle

Multifrequency Driven Nematics

Faculty of Advanced Technologies and Chemistry, Military University of Technology, 2 gen. S. Kaliskiego St., 00-908 Warsaw, Poland
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Crystals 2019, 9(5), 275; https://doi.org/10.3390/cryst9050275
Received: 10 May 2019 / Revised: 22 May 2019 / Accepted: 23 May 2019 / Published: 27 May 2019
(This article belongs to the Special Issue Liquid Crystal Optical Device)
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Abstract

Liquid crystals act on the amplitude and the phase of a wave front under applied electric fields. Ordinary LCs are known as field induced birefringence, thus both phase and amplitude modulation strongly depend on the voltage controllable molecular tilt. In this work we present electrooptical properties of novel liquid crystal (LC) mixture with frequency tunable capabilities from 100Hz to 10 KHz at constant applied voltage. The frequency tunability of presented mixtures shown here came from composition of three different families of rodlike liquid crystals. Dielectric measurements are reported for the compounds constituting frequency-controlled birefringence liquid crystal. Characterization protocols allowing the optimum classification of different components of this mixture, paying attention to all relevant parameters such as anisotropic polarizability, dielectric anisotropy, and dipole moment are presented. View Full-Text
Keywords: nematic; dual frequency nematic; dielectric anisotropy; optical modulation nematic; dual frequency nematic; dielectric anisotropy; optical modulation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Bennis, N.; Herman, J.; Kalbarczyk, A.; Kula, P.; Jaroszewicz, L.R. Multifrequency Driven Nematics. Crystals 2019, 9, 275.

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