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|Title:||Hydrogen gas detection via photothermal deflection measurement||Authors:||Kalli, Kyriacos
Othonos, Andreas S.
|Keywords:||Spectroscopy;Hydrogen;Thin films;Gas||Issue Date:||1997||Publisher:||AIP American Institute of Physics Inc.||Source:||Review of Scientific Instruments,1997, Volume 68, Issue 9, Pages 3544-3552||Abstract:||A study of a thermal wave hydrogen sensor interrogated via transverse optical beam deflection spectroscopy is presented. The sensor is a thin film polyvinylidene fluoride film coated with a thin palladium layer. The sensitivity to hydrogen results from thermal boundary condition changes at the gas-film interface and depends upon the thermophysical properties of the gas. A simple one-dimensional model is developed to qualitatively and semi-quantitatively describe the experimental results and it shows good agreement with the experiment. Concentrations of 0.1% hydrogen in the presence of a balanced air mixture and at room temperature were measured for this sensor and they indicate possible sensitivities approaching 100 ppm.||URI:||http://ktisis.cut.ac.cy/handle/10488/7412||ISSN:||0034-6748||DOI:||10.1063/1.1148320||Rights:||© 1997 American Institute of Physics.||Type:||Article|
|Appears in Collections:||Άρθρα/Articles|
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