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Time-resolved imaging of latent fingerprints with nanosecond resolution
Authors:L. K. Seah    U. S. Dinish    S. K. Ong    Z. X. Chao  V. M. Murukeshan
Affiliation:School of Mechanical and Production Engineering, Nanyang Technological University, Singapore 639798, Singapore
Abstract:Imaging of latent fingerprints using time-resolved (TR) method offers a broader platform to eliminate the unwanted background emission. In this paper, a novel TR imaging technique is demonstrated and implemented, which facilitates the detection of latent fingerprints with nanosecond resolution. Simulated experiments were carried out with two overlapping fingerprints treated with two fluorescent powders having different lifetimes in nanosecond range. The dependence of the fluorescence emission intensity in nanosecond resolution of TR imaging is also revealed.
Keywords:Author Keywords: Fluorescence lifetime   Time-resolved method   Time correlated single photon counting (TCSPC)   Latent fingerprints
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