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Proceedings Paper

Chemical sensors for the detection of organic pollutants
Author(s): Aseel K. Hassan; Maria Vela Molina; Asim K. Ray; Alexei V. Nabok; Zabih F. Ghassemlooy; Robert B. Yates; Reza Saatchi
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Paper Abstract

Vapor detection has been realized by the shift of the whole surface plasmon resonance (SPR) curve under dynamic state of adsorption as well as by measuring SPR reflectivity signal at a fixed angle of incidence. Selective, fast and reversible adsorption of the vapor molecules has been observed. The increase of both film thickness and refractive index of spun films during adsorption are found to correspond to the calixarenes behavior and may be explained by capturing of guest molecules in the film matrix, followed by their condensation. A model of the vapor registration system has been established and we also report in this paper on the extent of the selectivity, thus leading to the establishment of a sensor array.

Paper Details

Date Published: 20 July 1999
PDF: 9 pages
Proc. SPIE 3673, Smart Structures and Materials 1999: Smart Electronics and MEMS, (20 July 1999); doi: 10.1117/12.354285
Show Author Affiliations
Aseel K. Hassan, Sheffield Hallam Univ. (United Kingdom)
Maria Vela Molina, Sheffield Hallam Univ. (United Kingdom)
Asim K. Ray, Sheffield Hallam Univ. (United Kingdom)
Alexei V. Nabok, Sheffield Hallam Univ. (United Kingdom)
Zabih F. Ghassemlooy, Sheffield Hallam Univ. (United Kingdom)
Robert B. Yates, Sheffield Hallam Univ. (United Kingdom)
Reza Saatchi, Sheffield Hallam Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 3673:
Smart Structures and Materials 1999: Smart Electronics and MEMS
Vijay K. Varadan, Editor(s)

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