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arXiv · 1511.04431

Optical Properties of Drug Metabolites in Latent Fingermarks

Yao Shen·Qing Ai
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Abstract

Drug metabolites usually have structures of split-ring resonators (SRRs), which might lead to negative permittivity and permeability in electromagnetic field. As a result, in the UV-vis region, the latent fingermarks images of drug addicts and non drug users are inverse. The optical properties of latent fingermarks are quite different between drug addicts and non-drug users. This is a technic superiority for crime scene investigation to distinguish them. In this paper, we calculate the permittivity and permeability of drug metabolites using tight-binding model. The latent fingermarks of smokers and non-smokers are given as an example.

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Yao Shen, Qing Ai. 2015-10-08. Optical Properties of Drug Metabolites in Latent Fingermarks. https://doi.org/10.1038/srep20336

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