Investigations of dual-frequency nematic liquid crystals doped with dichroic dye |
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| Authors: | A Pianelli J Parka P Perkowski R Caputo E Otón M Mrukiewicz |
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| Institution: | 1. Faculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw, Poland;2. Department of Physics, University of Calabria, Rende, Italy;3. Department of Physics, University of Calabria, Rende, Italy |
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| Abstract: | In this work, we studied and analysed a particular variety of liquid crystals, the so-called dual-frequency nematic liquid crystals (DFNLCs). The interest was to perform dielectric spectroscopy and optical characterisation with two pure and doped mixtures of DFNLCs. By means the dielectric spectroscopy we observed a low value of crossover frequency at room temperature for one dye doped mixture. Additionally, in the spectra studies, a scattering of light at cross-frequency, and a stable and unstable focal conical state was observed, respectively, for the investigated mixtures. |
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| Keywords: | Dual-frequency liquid crystal relaxation frequency crossover frequency dielectric spectroscopy optical characterisation |
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