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Applying Anti-Stokes Phosphors in Development of Fingerprints on Surfaces Characterized by Strong Luminescence

NCJ Number
Journal of Forensic Identification Volume: 62 Issue: 1 Dated: January/February 2012 Pages: 28-35
Bogdan Drabarek; Antoni Siejca; Jaroslaw Moszczynski; Barbara Konior
Date Published
February 2012
8 pages
This article examines a proposed method for developing latent prints that is based on multiphoton absorption.
Using traditional luminescence methods to develop latent prints becomes problematic when dealing with backgrounds that demonstrate strong luminescence. In such instances, the application of time-resolved luminescence is considered a good solution. However, this technique requires the use of complicated devices that allow short-lived background fluorescence to be chopped off from a longer-lived fingerprint luminescence. This paper discusses a new and straightforward technique for the development of latent prints that involves using pigments with upconversion properties (anti-Stokes phosphors). The method requires an illumination source that emits infrared radiation. (Published Abstract)