NIR−NIR fluorescence: A new genre of fingermark visualisation techniques. (May 2016)

• Record Type: Journal Article
• Authors: King, Roberto S.P.; Hallett, Peter M.; Foster, Doug
• Is Part Of: Forensic science international. Volume 262(2016)
• Page Start: e28
• Page End: e33
• Publication Date: 2016-05
• Subjects: Infrared -- Fingerprint -- Powder -- Cuprorivaite -- Polymer banknote; Medical jurisprudence -- Periodicals; Chemistry, Forensic -- Periodicals; Forensic Medicine -- Periodicals; Médecine légale -- Périodiques; Chimie légale -- Périodiques; Gerechtelijke geneeskunde; Gerechtelijke chemie; Gerechtelijke psychiatrie; Chemistry, Forensic; Medical jurisprudence; Electronic journals; Periodicals; Electronic journals; 614.1
• DOI: 10.1016/j.forsciint.2016.03.037
• Languages: English
• ISSNs: 0379-0738

Abstract

Graphical abstract: Highlights: Cuprorivaite is demonstrated as a novel, non-toxic, NIR−NIR fluorescent fingerprint powder. Illumination and imaging in the IR routinely eliminates substrate background interference. Fingerprint development on problematic multi-coloured substrates is shown. Intense fluorescence allows sample screening from comfortable working distances. Abstract: A preliminary study reveals that finely divided cuprorivaite powder may be used to efficiently develop and subsequently image latent fingermarks across a range of highly patterned, coloured non-porous and semi-porous substrates using near infrared illumination and imaging. Problematic multi-coloured backgrounds provide very little interference under the illumination conditions used, and invoked fluorescence observed, when using this material. This is the first reported example of a NIR−NIR fluorophore for use within latent fingermark visualisation and offers the potential for application at the scene and in the laboratory.