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NIR−NIR fluorescence: A new genre of fingermark visualisation techniques
- King, Roberto S.P., Hallett, Peter M., Foster, Doug
- Forensic science international 2016 v.262 pp. e28
- fluorescence, fluorescent dyes, image analysis, lighting
- 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.