13 May 2011 Explosives detection using nanoporous coatings
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Abstract
Zeolite-coated cantilevers provided with internal heating elements have been developed and used for the selective detection of nitroderivates, in particular o-nitrotoluene as an example of an explosive-related molecule. In particular, Co exchanged commercial BEA zeolites have been deployed of rectangular Si cantilevers by microdropping technique. In particular, two different strategies have been demonstrated to increase the zeolite modified cantilevers performance: the sensing coating and the operating temperature. As a result, o-nitrotoluene LOD values below 1 ppm are attained at room temperature conditions; whereas the interference of toluene at concentrations below 1000 ppm is completely suppressed by heating the cantilever.
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María Pilar Pina, Ismael Pellejero, Miguel Urbiztondo, Javier Sesé, J. Santamaría, "Explosives detection using nanoporous coatings", Proc. SPIE 8031, Micro- and Nanotechnology Sensors, Systems, and Applications III, 803124 (13 May 2011); doi: 10.1117/12.883780; https://doi.org/10.1117/12.883780
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