Abstract
We report on the implementation of Pd-capped chemo-chromic metal hydrides as a sensing layer in fiber optic hydrogen detectors. Due to the change in optical properties of Mg-based alloys on hydrogen absorption, a drop in reflectance by a factor of 10 is demonstrated at hydrogen levels down to 15% of the lower explosion limit. The switching takes place in only a few seconds. Comparing Mg-Ni and Mg-Ti based alloys, we find that the latter has superior optical and switching properties. Using a 50 nm thick Mg
Original language | English |
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Pages (from-to) | 538-545 |
Journal | Sensors and Actuators B-Chemical |
Volume | 123 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2007 |