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NIR-NIR fluorescence: A new genre of fingermark visualisation techniques
Roberto S P King1, Peter M Hallett1, Doug Foster1
1Foster+Freeman Ltd, Vale Park, Evesham, Worcestershire WR11 1TD, UK.
Forensic Science International
|April 5, 2016
Summary
Finely divided cuprorivaite powder effectively visualizes latent fingerprints on colored surfaces using near-infrared technology. This novel fluorophore minimizes background interference, aiding forensic investigations.
Area of Science:
- Forensic Science
- Materials Science
- Chemistry
Background:
- Latent fingerprint development is crucial for forensic identification.
- Existing methods face challenges with patterned and colored substrates.
- Novel fluorescent materials are needed for improved detection.
Purpose of the Study:
- To evaluate cuprorivaite powder for latent fingermark visualization.
- To assess its efficacy on diverse, challenging surfaces.
- To explore its potential as a near-infrared (NIR) fluorophore.
Main Methods:
- Utilized finely divided cuprorivaite powder.
- Applied the powder to non-porous and semi-porous substrates with latent fingerprints.
- Employed near-infrared (NIR) illumination and imaging for detection.
- Assessed performance against multi-colored backgrounds.
Main Results:
- Cuprorivaite powder efficiently developed and imaged latent fingermarks.
- Effective visualization was achieved on highly patterned, colored surfaces.
- Minimal interference was observed from multi-colored backgrounds.
- Invoked fluorescence was successfully detected under NIR illumination.
Conclusions:
- Cuprorivaite is a promising NIR-NIR fluorophore for latent fingermark visualization.
- This material offers a new tool for forensic science.
- Potential applications exist for both field and laboratory use.
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