Document Detail


Multimode imaging in the thermal infrared for chemical contrast enhancement. Part 1: Methodology.
MedLine Citation:
PMID:  20863135     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
We combine a thermal light source with a conventional thermal infrared camera, alternating current (AC) detection methods, and chemical filtering of the infrared (IR) light to generate several imaging modalities in a simple manner. We demonstrate that digital lock-in amplifier techniques can increase the chemical contrast in an active thermal infrared image using both reflectance and thermal re-emission. We show this method is useful for visualizing thin coatings on fabrics that are invisible to the eye. We also take advantage of a "like-detects-like" chemical filtering approach to chemical selectivity for the purpose of chemical identification using a broadband thermal detector.
Authors:
Heather Brooke; Megan R Baranowski; Jessica N McCutcheon; Stephen L Morgan; Michael L Myrick
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Analytical chemistry     Volume:  82     ISSN:  1520-6882     ISO Abbreviation:  Anal. Chem.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2011-04-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370536     Medline TA:  Anal Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  8412-20     Citation Subset:  -    
Affiliation:
Department of Chemistry and Biochemistry, 631 Sumter Street, University of South Carolina, Columbia, South Carolina 29208, USA.
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