title: NIR-NIR fluorescence: A new genre of fingermark visualisation techniques.
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.
authors.affiliation: Foster+Freeman Ltd, Vale Park, Evesham, Worcestershire WR11 1TD, UK. Electronic address: roberto.king@fosterfreeman.com.
authors.forename: Roberto S P
authors.initials: RS
authors.lastname: King
authors.affiliation: Foster+Freeman Ltd, Vale Park, Evesham, Worcestershire WR11 1TD, UK.
authors.forename: Peter M
authors.initials: PM
authors.lastname: Hallett
authors.affiliation: Foster+Freeman Ltd, Vale Park, Evesham, Worcestershire WR11 1TD, UK.
authors.forename: Doug
authors.initials: D
authors.lastname: Foster
mesh_terms: D000328:Adult; D003300:Copper; D003878:Dermatoglyphics; D005260:Female; D005453:Fluorescence; D006801:Humans; D007259:Infrared Rays; D049408:Luminescent Agents; D008297:Male; D008875:Middle Aged; D011208:Powders; D017640:Silicates; D013499:Surface Properties
chemical_list: D049408:Luminescent Agents; D011208:Powders; D017640:Silicates; C542550:cuprorivaite; D003300:Copper
keywords: Cuprorivaite; Fingerprint; Infrared; Polymer banknote; Powder