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Liquid Crystals Volume 46, 2019 - Issue 7
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Article

Investigations of dual-frequency nematic liquid crystals doped with dichroic dye

A. PianelliFaculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw, Poland;Department of Physics, University of Calabria, Rende, ItalyCorrespondence[email protected]
,
J. ParkaFaculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw, Poland
,
P. PerkowskiFaculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw, Poland
,
R. CaputoDepartment of Physics, University of Calabria, Rende, ItalyORCID Iconhttp://orcid.org/0000-0002-0065-8422
ORCID Icon,
E. OtónFaculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw, Poland
,
M. MrukiewiczFaculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw, PolandORCID Iconhttp://orcid.org/0000-0002-0212-4520
ORCID Icon,
R. MazurFaculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw, PolandORCID Iconhttp://orcid.org/0000-0001-5675-4459
ORCID Icon,
K. SielezinFaculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw, Poland
&
K. GarbatFaculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw, Poland
 show all
Pages 1001-1012 | Received 25 Oct 2018, Accepted 18 Nov 2018, Published online: 02 Dec 2018
 
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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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Acknowledgments

This research was supported by the Scientific Project MUT PBS 23652.

Disclosure statement

No potential conflict of interest was reported by the authors.

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