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Proceedings Paper

Standoff imaging of chemicals using IR spectroscopy
Author(s): Marissa E. Morales-Rodríguez; Larry R. Senesac; Thomas Thundat; Michael K. Rafailov; Panos G. Datskos
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Paper Abstract

Here we report on a standoff spectroscopic technique for identifying chemical residues on surfaces. A hand-held infrared camera was used in conjunction with a wavelength tunable mid-IR quantum cascade laser (QCL) to create hyperspectral image arrays of a target with an explosive residue on its surface. Spectral signatures of the explosive residue (RDX) were extracted from the hyperspectral image arrays and compared with a reference spectrum. Identification of RDX was achieved for residue concentrations of 20 μg per cm2 at a distance of 1.5 m, and for 5 μg per cm2 at a distance of 15 cm.

Paper Details

Date Published: 13 May 2011
PDF: 8 pages
Proc. SPIE 8031, Micro- and Nanotechnology Sensors, Systems, and Applications III, 80312D (13 May 2011); doi: 10.1117/12.885204
Show Author Affiliations
Marissa E. Morales-Rodríguez, Oak Ridge National Lab. (United States)
Larry R. Senesac, Oak Ridge National Lab. (United States)
Thomas Thundat, Oak Ridge National Lab. (United States)
Michael K. Rafailov, The Reger Group (United States)
Panos G. Datskos, Oak Ridge National Lab. (United States)


Published in SPIE Proceedings Vol. 8031:
Micro- and Nanotechnology Sensors, Systems, and Applications III
Thomas George; M. Saif Islam; Achyut K. Dutta, Editor(s)

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