论文信息 - Gas detection in the ppb-range with a high frequency, high sensitivity surface acoustic wave device

Gas detection in the ppb-range with a high frequency, high sensitivity surface acoustic wave device

Abstract We have developed a high sensitivity surface acoustic wave gas sensing device for NO 2 with a detection limit in the ppb range. The sensor layers were phthalocyanines coated by sublimation, the Langmuir-Blodgett technique, and by chemical immobilization. Thickness ranged from one monolayer to 40 nm.

[1] A. Venema,et al. NO2Gas-Concentration Measurement with a SAW-Chemosensor , 1987, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[2] John D. Wright,et al. Chemical and Structural Influences on Effects of Adsorbed Gases on Semiconductivity of Organic Films , 1983 .

[3] H. Fuchs,et al. A new high-frequency high-sensitivity SAW device for NO2 gas detection in the sub-ppm range , 1991 .

[4] G. G. Roberts,et al. Surface acoustic wave sensors incorporating Langmuir-Blodgett films , 1988 .

[5] A. W. Barendsz,et al. Metallo)phthalocyanines as chemical interfaces on a surface acoustic wave gas sensor for nitrogen dioxide , 1988 .

[6] H. Wohltjen. Mechanism of Operation and Design Considerations for Surface Acoustic Wave Device Vapor Sensors. , 1984 .

[7] John D. Wright,et al. Applications of Organic Solids to Chemical Sensing , 1986 .

[8] A. Coomans,et al. A SAW gas sensor for NO2. Chemically immobilized phthalocyanines as chemical interface , 1988 .

[9] G. Roberts,et al. Acoustoelectric devices incorporating Langmuir-Blodgett films , 1987 .