Title : 
A Polyaniline/WO3 Nanocomposite Layer Based Surface Acoustic Wave NO2 Gas Sensors
         
        
            Author : 
Shen, Chi-Yen ; Cheng, Yung-Hsi ; Wang, Shih-Han ; Kuo, Shih-Hao ; Hsu, Cheng-Liang
         
        
            Author_Institution : 
Electr. Eng. Dept., I-Shou Univ., Kaohsiung, Taiwan
         
        
        
        
        
        
            Abstract : 
In this work, we report a surface acoustic wave (SAW) sensor based on a polyaniline/WO3 nanocomposite layer to detect NO2. The presented SAW sensor exhibited reversibility, sensitivity, and repeatability when NO2 was in ppm level at room temperature. The frequency shift ¿f/fo of sensor was 0.58 ppm to 29 ppm NO2.
         
        
            Keywords : 
gas sensors; nanocomposites; surface acoustic wave sensors; SAW sensor; frequency shift; gas sensors; nanocomposite layer; surface acoustic wave; Acoustic sensors; Acoustic signal detection; Acoustic waves; Chemical sensors; Frequency; Gas detectors; Nitrogen; Protection; Surface acoustic waves; Temperature sensors;
         
        
        
        
            Conference_Titel : 
Innovative Computing, Information and Control (ICICIC), 2009 Fourth International Conference on
         
        
            Conference_Location : 
Kaohsiung
         
        
            Print_ISBN : 
978-1-4244-5543-0
         
        
        
            DOI : 
10.1109/ICICIC.2009.45