Download or read book Nanomaterial Sensing Layer Based Surface Acoustic Wave Hydrogen Sensors written by krishnan Srinivasan and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: When the Pd film was exposed to hydrogen it was observed that it produced decreases in frequency to hydrogen challenges, conforming to mass loading effect. It was also observed that the Pd film started degrading with repeated exposure to hydrogen, with shifts after each exposure going smaller and smaller.