Pd-functionalized MEMS resonator for hydrogen gas sensing at ambient pressure

This work presents the fabrication and characterization of a novel hydrogen-detecting micro-resonator based on the expansion of palladium (Pd) as it is exposed to hydrogen (H2) gas. The working principle of the device has been confirmed and it shows a stronger response at a given H2 partial pressure than what theory predicts using bulk Pd material parameters. This may be explained by properties that are specific for Pd thin films in the nanometre range. The results suggest that the presence of very dilute amounts of hydrogen gas could be detected and the dynamic range of the device could be greatly increased if the device is optimized further.

Presented at:
7th International Workshop on Nanomechanical Cantilever Sensors, Banff, Canada., May 26-28, 2010

Note: The status of this file is: EPFL only

 Record created 2010-01-26, last modified 2018-03-18

Download fulltext

Rate this document:

Rate this document:
(Not yet reviewed)