Room temperature hydrogen gas detection with optically thin palladium films on silicon oxide using photomodulated thermoreflectance
1999 (English)In: AIP Conference Proceedings, ISSN 0094-243X, Vol. 463, 220-222 p.Article in journal (Refereed) Published
The sensitivity of various thicknesses of optically thin film Pd layers evaporated into a silicon oxide substrate is investigated in the presence of a hydrogen/air atmosphere at room temperature. The magnitude of the resulting reflectivity change is measured using an excite-probe technique, through laser excited photothermal modulation of a probe beam. Data indicates that concentrations of 0.1% hydrogen in a balanced air mixture and at room temperature may be measured with. an 8nm Pd film. Inhomogeneities in the Pd layers lead to anomalous behavior.
Place, publisher, year, edition, pages
American Institute of Physics (AIP), 1999. Vol. 463, 220-222 p.
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-88120DOI: 10.1063/1.58050ISI: 000079746800067OAI: oai:DiVA.org:liu-88120DiVA: diva2:602857
10th international conference on photoacoustic and photothermal phenomena, 23-27 August 1998, Rome, Italy