title: The detection properties of ammonia SAW gas sensors based on L-glutamic acid hydrochloride.
abstract: This study has investigated an improved surface acoustic wave (SAW) ammonia gas sensor based on L-glutamic acid hydrochloride. It presents an excellent reversibility, sensitivity, and repeatability to ammonia. The frequency shift versus ammonia concentration above 40 degrees C was a monotonic function, and the limit of detection of the sensor at 50 degrees C was 80 ppb.
authors.forename: Chi-Yen
authors.initials: CY
authors.lastname: Shen
authors.forename: Chun-Pu
authors.initials: CP
authors.lastname: Huang
authors.forename: Wang-Tsung
authors.initials: WT
authors.lastname: Huang