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We present a novel method for the development of a latent fingerprint by selective electrodeposition of a copper thin film from sulfate solution onto the conductive substrate between fingerprint ridges to generate a negative image of the fingerprint deposit. After optimizing the parameters (deposition time, deposition potential, and copper concentration), the preferential electrodeposition of copper...
Fingerprints are still one of the most powerful and important means of biometric identification. This paper presents a green and fast electrochemical method for improved development of latent fingerprints (LFPs) on five kinds of commonly encountered conductive substrates by the use of spatial selective electrodeposition of graphene nanosheets. Since secretions produced in the fingerprint deposit lead...
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