NDLI: Ultraviolet Fluorescence Imaging of Fingerprints

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Ultraviolet Fluorescence Imaging of Fingerprints

Content Provider	Semantic Scholar
Author	Saitoh, Naoki Akiba, Norimitsu
Copyright Year	2006
Abstract	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.
Starting Page	691
Ending Page	699
Page Count	9
File Format	PDF HTM / HTML
PubMed reference number	16799740v1
Volume Number	6
Journal	TheScientificWorldJournal
Language	English
Access Restriction	Open
Subject Keyword	Cleidocranial Dysplasia Excitation Fluorescence Imaging Incised wound Magnetic Resonance Imaging Neodymium-Doped Yttrium Aluminum Garnet Lasers Paper Small nanosecond wavelength
Content Type	Text
Resource Type	Article

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