Journal
APPLIED SPECTROSCOPY
Volume 63, Issue 11, Pages 1197-1203Publisher
SAGE PUBLICATIONS INC
DOI: 10.1366/000370209789806812
Keywords
Raman spectroscopy; Explosives; Chemical imaging; Hyperspectral; Biometrics; Forensics
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Funding
- Joint IED Defeat Organization and the Research and Technology Directorate, ECBC
- National Research Council Research Associateship Award at the U.S. Army Edgewood Chemical Biological Center
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Raman chemical imaging (RCI) has been used to detect and identify explosives in contaminated fingerprints. Bright-field imaging is used to identify regions of interest within a fingerprint, which can then be examined to determine their chemical composition using RCI and fluorescence imaging. Results are presented where explosives in contaminated fingerprints are identified and their spatial distributions are obtained. Identification of explosives is obtained using Pearson's cosine cross-correlation technique using the characteristic region (500-1850 cm(-1)) of the spectrum. This study shows the ability to identify explosives nondestructively so that the fingerprint remains intact for further biometric analysis. Prospects for forensic examination of contaminated fingerprints are discussed.
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