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

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.

Keywords

• acetone vapor
• sensitive element
• gas sensor