20 July 1999 Chemical sensors for the detection of organic pollutants
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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.
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Aseel K. Hassan, Aseel K. Hassan, Maria Vela Molina, Maria Vela Molina, Asim K. Ray, Asim K. Ray, Alexei V. Nabok, Alexei V. Nabok, Zabih F. Ghassemlooy, Zabih F. Ghassemlooy, Robert B. Yates, Robert B. Yates, Reza Saatchi, Reza Saatchi, } "Chemical sensors for the detection of organic pollutants", Proc. SPIE 3673, Smart Structures and Materials 1999: Smart Electronics and MEMS, (20 July 1999); doi: 10.1117/12.354285; https://doi.org/10.1117/12.354285

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