Please use this identifier to cite or link to this item: http://ktisis.cut.ac.cy/handle/10488/7412
Title: Hydrogen gas detection via photothermal deflection measurement
Authors: Kalli, Kyriacos 
Othonos, Andreas S. 
Christofidès, Constantinos
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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