Features of the transition to the isotropic state of the liquid crystal sensitive element of the gas sensor under the action of acetone vapor

Zynovii Mykytiuk; Hryhorii Barylo; Iryna Kremer; Maria Ivakh; Yurii Kachurak; Igor Kogut

doi:10.15330/pcss.23.3.473-477

Authors

Zynovii Mykytiuk Lviv Polytechnic National University, Lviv, Ukraine
Hryhorii Barylo Lviv Polytechnic National University, Lviv, Ukraine
Iryna Kremer Lviv Polytechnic National University, Lviv, Ukraine
Maria Ivakh Lviv Polytechnic National University, Lviv, Ukraine
Yurii Kachurak Lviv Polytechnic National University, Lviv, Ukraine
Igor Kogut Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine

DOI:

https://doi.org/10.15330/pcss.23.3.473-477

Keywords:

acetone vapor, sensitive element, gas sensor

Abstract

The process of detailed research of the transient process, which takes place in the sensitive element of the liquid crystal sensor during interaction with acetone vapors, is described. The abrupt transition of the liquid crystal to the isotropic state is one of the main obstacles which prevents the construction of an acetone liquid crystal sensor. A mixture of nematic liquid crystal E7 and cholesteric impurity CB15 was used as a sensitive element.

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