We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Surface Acoustic Wave Ammonia Sensors Based on ST-cut Quartz under Periodic Al Structure.
- Authors
Cheng-Liang Hsu; Chi-Yen Shen; Rume-Tze Tsai; Ming-Yau Su
- Abstract
Surface acoustic wave (SAW) devices are key components for sensing applications. SAW propagation under a periodic grating was investigated in this work. The theoretical method used here is the space harmonic method. We also applied the results of SAW propagation studied in this work to design a two-port resonator with an Al grating on ST-cut quartz. The measured frequency responses of the resonator were similar to the simulation ones. Then, the chemical interface of polyaniline/WO3 composites was coated on the SAW sensor for ammonia detection. The SAW sensor responded to ammonia gas and could be regenerated using dry nitrogen.
- Subjects
ACOUSTIC surface wave devices; AMMONIA; DETECTORS; RESONATORS; NITROGEN; EMISSIVITY; SPECTRORADIOMETER
- Publication
Sensors (14248220), 2009, Vol 9, Issue 2, p980
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s90200980