The characteristics of quartz crystal microbalance coated with lipid Langmuir-Blodgett films as an olfactory sensing system

Abstract

The characteristic patterns of adsorption-desorption of alcohols on Lipids were investigated using quartz crystal microbalances (QCM) coated with different lipid Langmuir-Blodgett (LB) films. The lipid LB films were coated onto quartz crystal by transferring mixed monolayers of lipids and octadecylamin (ODA). The response curves of lipids to alcohols were obtained by blowing gas mixtures onto the QCM. The characteristic parameters were deduced from the retardation of adsorption and the frequency change. Based on the analysis of the response curves using a 6-channeI sensor system, chemical identification was performed using a neural network pattern recognition system.