A love-wave gas sensor coated with functionalized polysiloxane for sensingorganophosphorus compounds

Love-wave devices based on quartz piezoelectric substrate and SiO2 guiding layer coated with a specific polysiloxane polymer are used to detect organo phosphorus compounds. This allows to study affinities of the polysiloxane p olymer coating towards organophosphorus compounds, and to demonstrate the h igh sensitivity of love-wave devices for gas detection. We also present a t heoretical model which describe wave propagation in love devices and allow to design optimized structures. Then, we discuss experimental results, in t erms of interactions between sensor and vapor and in comparison to SAW resu lts, (C) 2001 Elsevier Science B.V. All rights reserved.