Ultraviolet luminescence from latent fingerprints.
Illumination of latent fingerprints on white paper using 266-nm radiation from a Nd:YAG laser and photographic detection of their ultraviolet fluorescence, produces images with good ridge detail. The detection rate was 69% in a survey of fingerprints from 34 people compared with only 23% using an argon-ion laser at 514 nm. Prolonged exposure to UV light decreased the inherent UV fluorescence intensity but no adverse effects were observed on subsequent treatment with 1,8-diazafluoren-9-one or ninhydrin.
Metropolitan Police Forensic Science Laboratory, London, UK.
S K
SK
Bramble
K E
KE
Creer
W G
WG
Qiang
B
B
Sheard
D000375:Aging; D003878:Dermatoglyphics; D005554:Forensic Medicine / Q000379:methods*; D006801:Humans; D007834:Lasers; D008163:Luminescent Measurements; D010781:Photography / Q000379:methods*; D014466:Ultraviolet Rays