Fiber optic hydrogen detectors containing Mg-based metal hydrides

M.J. Slaman, B. Dam, M. Pasturel, D.M. Borsa, H. Schreuders, J.H. Rector, R.P. Griessen

Research output: Contribution to JournalArticleAcademicpeer-review

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 languageEnglish
Pages (from-to)538-545
JournalSensors and Actuators B-Chemical
Volume123
Issue number1
DOIs
Publication statusPublished - 2007

Bibliographical note

Fiber optic hydrogen detectors containing Mg-based metal hydrides

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