Titre :

LumicyanoTM: A new fluorescent cyanoacrylate for a one-step luminescent latent fingermark development

Auteur(s) :

Prete, Cosimo [Auteur correspondant]
Galmiche, Laurent [Auteur]
Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires [PPSM]
Quenum-Possy-Berry, Fifonsi-Gwladys [Auteur correspondant]
Institut de recherche criminelle de la Gendarmerie nationale [IRCGN]
Allain, Clémence [Auteur correspondant]
Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires [PPSM]
Thiburce, Nicolas [Auteur]
Colard, Thomas [Auteur]
Unité de Taphonomie médico-légale et Anatomie - ULR 7367 [UTML&A]

Titre de la revue :

Forensic Science International

Pagination :

104-112

Éditeur :

Elsevier

Date de publication :

2013-12

ISSN :

0379-0738

Mot(s)-clé(s) en anglais :

Fluorescent cyanoacrylate
Latent fingermark
Non-porous surfaces
Semi-porous substrates
Dye staining
Lumicyano

Discipline(s) HAL :

Sciences du Vivant [q-bio]/Autre [q-bio.OT]

Résumé en anglais : [en]

Latent fingermarks developed by cyanoacrylate fuming often lack contrast; therefore further enhancement is required, such as dye staining. This second step is part of the conventional detection sequences performed by ...
Lire la suite >Latent fingermarks developed by cyanoacrylate fuming often lack contrast; therefore further enhancement is required, such as dye staining. This second step is part of the conventional detection sequences performed by forensics practitioners. Dye-staining or powder dusting aims at improving contrast and at increasing the legibility of details, yet their use may at times be limited. Indeed powder dusting may not be effective due to unexpected adherence to the background, and poor affinity to the cyanoacrylate. In the same way staining processes can dye a whole semi-porous surface or may wash the marks. To avoid that second step, a new luminescent cyanoacrylate (LumicyanoTM) which allows one-step development without changing the fuming chamber settings (80% humidity rate, 120 8C fuming temperature) was developed and assessed. This study aimed at comparing LumicyanoTM to a conventional two-step process. A detailed sensitivity study was conducted on glass slides, as well as the processing of various non-porous and semi-porous substrates, usually considered as problematic for a dye staining step. The results indicate that LumicyanoTM detects fingermarks with equal or better sensitivity and ridge details than currently used cyanoacrylate. Secondly in luminescent mode, good ridges clarity and excellent contrast are observed, even if LumicyanoTM is sometimes less bright than the two-step process. Furthermore, conventional enhancement can still be carried out if needed. As a conclusion, LumicyanoTM makes it possible to avoid an enhancement step which can be detrimental to further examinations, particularly on rough or semi-porous surfaces.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Unité de Taphonomie Médico-Légale & d’Anatomie (UTMLA) - ULR 7367

Source :

Harvested from HAL