Imaging Latent Fingerprints by Electrochemiluminescence

摘要

Fingerprints are impressions of the friction ridge pattern left by human fingertips after touching a surface. They function as an indispensable tool in forensic investigations and personal identification, as well as in our daily life for many other purposes, such as safety inspection, access control, and individual credentials.Fingerprints are composed of perspiration, natural secretion residue, and exogenous components from the environment, some of which are rarely seen (termed invisible or latent fingerprints, LFPs) and require some means of "development" by applying external materials to enhance their visualization. To date, innumerable methods, including both chemical and physical treatments, have been exploited for LFP detection.Additionally, research interest has been recently directed to identifying drugs and drug metabolites, explosive residues, or other secretion chemicals in LFPs.