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27 February 2004 Through-container THz sensing: applications for biodetection
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Proceedings Volume 5268, Chemical and Biological Standoff Detection; (2004)
Event: Optical Technologies for Industrial, Environmental, and Biological Sensing, 2003, Providence, RI, United States
The potential container penetrating capabilities of THz radiation leads to possible applications for container penetrating sensors for biological hazards. Such an approach requires the presence of distinct THz frequency resonances in the target compounds coupled with sufficiently transparent container materials to allow through container sensing. The results of a THz spectroscopic survey of container and clothing materials are presented along with spectra of materials that were chosen as simulants and markers for illicit biological substances. The spectroscopic data presented show at least partial transparency for materials commonly used for clothing and packaging. We also measure distinct spectral signatures in dipicolinic acid, calcium dipicolinate, peptidoglycan, and 2,6-diaminopimelic acid, biologically significant molecules that are indicative of hazardous spore forming bacteria. These spectra differ significantly from those of the container materials to provide a potential contrast mechanism which could be used for identification.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David J. Cook, Brian K. Decker, Gami Dadusc, and Mark G. Allen "Through-container THz sensing: applications for biodetection", Proc. SPIE 5268, Chemical and Biological Standoff Detection, (27 February 2004);

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