Document Detail

Ultraviolet fluorescence imaging of fingerprints.
MedLine Citation:
PMID:  16799740     Owner:  NLM     Status:  MEDLINE    
We studied fluorescence imaging of fingerprints on a high-grade white paper in the deep ultraviolet (UV) region with a nanosecond-pulsed Nd-YAG laser system that consists of a tunable laser and a cooled CCD camera. Clear fluorescence images were obtained by time-resolved imaging with a 255- to 425-nm band-pass filter, which cuts off strong fluorescence of papers. Although fluorescence can be imaged with any excitation wavelength between 220 and 290 nm, 230 and 280 nm are the best in terms of image quality. However, the damage due to laser illumination was smaller for 266-nm excitation than 230- or 280-nm excitation. Absorption images of latent fingerprints on a high-grade white paper are also obtained with our imaging system using 215- to 280-nm laser light. Shorter wavelengths produce better images and the best image was obtained with 215 nm. Absorption images are also degraded slightly by laser illumination, but their damage is smaller than that of fluorescence images.
Naoki Saitoh; Norimitsu Akiba
Publication Detail:
Type:  Journal Article     Date:  2006-06-21
Journal Detail:
Title:  TheScientificWorldJournal     Volume:  6     ISSN:  1537-744X     ISO Abbreviation:  ScientificWorldJournal     Publication Date:  2006  
Date Detail:
Created Date:  2006-06-26     Completed Date:  2006-07-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101131163     Medline TA:  ScientificWorldJournal     Country:  England    
Other Details:
Languages:  eng     Pagination:  691-9     Citation Subset:  IM    
Second Forensic Science Division, National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba 277-0882 Japan.
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MeSH Terms
Equipment Design
Ultraviolet Rays*

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