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

被引：7
|
作者：
Pianelli, A. [1 ,2 ]
Parka, J. [1 ]
Perkowski, P. [1 ]
Caputo, R. [2 ]
Oton, E. [1 ]
Mrukiewicz, M. [1 ]
Mazur, R. [1 ]
Sielezin, K. [1 ]
Garbat, K. [1 ]
机构：
[1] Mil Univ Technol, Fac Adv Technol & Chem, Warsaw, Poland
[2] Univ Calabria, Dept Phys, Arcavacata Di Rende, Italy
来源：
LIQUID CRYSTALS | 2019年 / 46卷 / 07期
关键词：
Dual-frequency liquid crystal; relaxation frequency; crossover frequency; dielectric spectroscopy; optical characterisation; DIELECTRIC-SPECTROSCOPY; PHOTONIC STRUCTURE;
D O I：
10.1080/02678292.2018.1550821
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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.
引用
收藏
页码：1001 / 1012
页数：12
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