Chi-Yen Shen, Chun-Pu Huang, W. Huang
Dec 19, 2005
Citations
0
Influential Citations
6
Citations
Journal
IEEE transactions on ultrasonics, ferroelectrics, and frequency control
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.