Title :
Organic vapor sensors based on SAW resonator and organic films
Author :
Enguang, Dai ; Guanping, Feng ; Zhenhua, He ; Dafu, Cui
Author_Institution :
Dept. of Precision Instrum., Tsinghua Univ., Beijing, China
fDate :
3/1/1997 12:00:00 AM
Abstract :
The majority of investigations of SAW devices used as chemical sensors are based on delay line oscillators. However, SAW resonator oscillator offers some advantages over the SAW delay line oscillator for its higher stability. In the incipient stage of fabricating gas sensors based upon SAW resonator, taking detection of organic vapor as an example, the analysis method that combines the SAW theory with organic film technology has been adopted to give an intensive insight into the responses of two-port SAW resonator coated with LB-film and cast-film after exposure to organic vapors.
Keywords :
Langmuir-Blodgett films; gas sensors; organic compounds; surface acoustic wave resonators; surface acoustic wave sensors; LB film; cast film; chemical sensor; organic film; organic vapor sensor; two-port SAW resonator oscillator; Chemical sensors; Coatings; Delay lines; Gas detectors; Laboratories; Oscillators; Stability; Surface acoustic wave devices; Surface acoustic waves; Water heating;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
