Optical properties of drug metabolites in latent fingermarks.
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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.
SUBMITTER: Shen Y
PROVIDER: S-EPMC4738256 | biostudies-other | 2016 Feb
REPOSITORIES: biostudies-other
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