Зміна спектральних характеристик рідкокристаліцічного активного середовища допованого багатошаровими вуглецевими нанотрубками під дією нітроген діоксиду

I. Kogut; Z. Mykytyuk; Y. Kachurak; M. Vistak; O. Blavt; I. Kremer; O. Shymchyshyn; R. Tymkovich

doi:10.15330/pcss.26.1.23-28

Authors

I. Kogut Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
Z. Mykytyuk Національний університет "Львівська політехніка", Львів, Україна
Y. Kachurak Lviv Polytechnic National University, Lviv, Ukraine
M. Vistak Danylo Halytsky Lviv National Medical University,Ukraine
O. Blavt Lviv Polytechnic National University, Lviv, Ukraine
I. Kremer Lviv Polytechnic National University, Lviv, Ukraine
O. Shymchyshyn Lviv Polytechnic National University, Lviv, Ukraine
R. Tymkovich Lviv Polytechnic National University, Lviv, Ukraine

DOI:

https://doi.org/10.15330/pcss.26.1.23-28

Keywords:

optics, liquid crystal, nitrogen dioxide, LC sensors

Abstract

The paper examines the effect of nitrogen dioxide (NO₂) on the spectral characteristics of a liquid crystal mixture doped with multilayer nanotubes. The liquid crystal mixture was synthesized based on cholesteric liquid crystal BLO-61 and nematic 5CB (26%) with a wide range of mesophase existence temperatures, the concentration of nanotubes was up to 0.7%. It was established that the introduction of nanotubes into the mixture leads to a significant increase in the sensitivity of the mixture to inorganic substances due to increased absorption. An analysis of the change in the spectral properties of the mixture at different concentrations of nitrogen dioxide in the sensor volume was performed and the coefficient of spectral sensitivity was determined. The obtained results indicate the possible use of this mixture as a sensitive sensor element for the detection of nitrogen compounds in the future.

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