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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
engineering
Optical fibre sensor coated with porous silica layers for gas and chemical vapour detection
Sensors and Actuators, B: Chemical, Volume 44, No. 1-3, Year 1997
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Description
Fibre optic sensors have been conceived in new technologies for detecting very small amounts of chemical, gaseous and biological species. Recently, new polymer-clad silica (PCS) fibres coated with thin porous silica layers have been developed. These porous layers have been prepared by the sol-gel method using the dip-coating technique. In this work, this new material has been investigated for detecting gases and vapours. By choosing a fixed incident angle, variation of light power transmitted through the fibre is detected as the vapour or gas to be detected is sorbed in the porous silica layer. Good sensitivity and reversibility have been obtained for this system. Moreover, both the response time and the desorption time have been found less than 2 min. Chlorinated hydrocarbons such as trichloroethylene, carbon tetrachloride, chloroform, dichloromethane and alkanes such as propane, butane and hexane can be detected with detection limits of 0.6, 1.5, 1.7, 4, 25, 10 and 5% respectively. © 1997 Elsevier Science S.A.
Authors & Co-Authors
Abdelghani, Adnane
France, Ecully
Ingénierie et Fonctionnalisation Des Surfaces Ifos
France, Saint-etienne
Université Jean Monnet Saint Etienne
Chovelon, Jean Marc
France, Ecully
Ingénierie et Fonctionnalisation Des Surfaces Ifos
Jaffrézic-Renault, Nicole J.
France, Ecully
Ingénierie et Fonctionnalisation Des Surfaces Ifos
Matèjec, Vlastimil
Czech Republic, Prague
Institute of Photonics and Electronics of the Academy of Sciences of the Czech Republic
Statistics
Citations: 64
Authors: 4
Affiliations: 3
Identifiers
Doi:
10.1016/S0925-4005(97)00172-X
ISSN:
09254005
Research Areas
Environmental