Fingermark detection based on the in situ growth of luminescent nanoparticles--towards a new generation of multimetal deposition.
The in situ deposition of zinc oxide on gold nanoparticles in aqueous solution has been here successfully applied in the field of fingermark detection on various non-porous surfaces. In this article, we present the improvement of the multimetal deposition, an existing technique limited up to now to non-luminescent results, by obtaining luminescent fingermarks with very good contrast and details. This is seen as a major improvement in the field in terms of selectivity and sensitivity of detection, especially on black surfaces.
Becue
Andy
A
Institut de Police Scientifique, School of Criminal Sciences, Batochime, University of Lausanne, CH-1015 Lausanne, Switzerland. andy.becue@unil.ch
Scoundrianos
Aurèle
A
Champod
Christophe
C
Margot
Pierre
P
D003102:Colloids; D003878:Dermatoglyphics; D005554:Forensic Medicine / Q000379:methods*; D006046:Gold; D006801:Humans; D008163:Luminescent Measurements; D053768:Metal Nanoparticles; D013499:Surface Properties; D015034:Zinc Oxide
D003102:Colloids; D006046:Gold; D015034:Zinc Oxide