Virginia TechDong, ShuxiangBai, FeimingLi, JiefangViehland, Dwight D.2014-02-032014-02-032003-06-01Dong, SX; Bai, FM; Li, JF; et al., "Sound-resonance hydrogen sensor," Appl. Phys. Lett. 82, 4590 (2003); http://dx.doi.org/10.1063/1.15869940003-6951http://hdl.handle.net/10919/25275A hydrogen sensor is reported in which a small piezoelectric-sound-resonance-cavity (PSRC) is used as the sensing element. Detection utilizes sound resonance and acoustic property differences between H-2 and air as a sensing mechanism. Changes in H-2 concentration result in a shift of the sound-resonance state of the PSRC. Preliminary experiments have demonstrated a sensitivity limit of 8 ppm, a fast response time similar to1.5 second, and detection capabilities over a broad concentration range 10(-5) < n < 0.2. (C) 2003 American Institute of Physics.application/pdfen-USIn CopyrightPhysicsArticle - Refereedhttp://scitation.aip.org/content/aip/journal/apl/82/25/10.1063/1.1586994https://doi.org/10.1063/1.1586994