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Vacuum metal deposition enhancement of friction ridge detail on ballistic materials.

Pollitt, J, Christofidis, G, Morrissey, J and Birkett, JW (2020) Vacuum metal deposition enhancement of friction ridge detail on ballistic materials. Forensic Science International, 316. ISSN 0379-0738

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Abstract

The efficacy of Gold/Zinc and Silver/Zinc vacuum metal deposition (VMD) protocols were assessed as stand-alone methods of fingermark enhancement on ballistic brass materials. The results demonstrate the effectiveness of VMD enhancement on a large pool of donors (n = 20), with potentially identifiable marks recovered for the majority of donors, including samples aged up to two months. Of the 20 donors a subset of six donors were selected to assess the capability of VMD enhancement on brass fired cartridge cases, from which some friction ridge detail (FRD) was recovered. Lastly, an attempt to understand which fingermark components are facilitators of VMD enhancement was made. Fingermark residue was extracted from brass tiles and fired cartridge cases before analysing chromatographically (GC-MS). Although some key components were indicated, further evaluation of all fingermark components is needed to draw firm conclusions as to the role each plays in VMD enhancement.

Item Type: Article
Uncontrolled Keywords: Ballistics; Fingermarks; Fired cartridge cases; Forensic science; Friction Ridge detail; Vacuum metal deposition
Subjects: Q Science > QD Chemistry
R Medicine > RA Public aspects of medicine > RA1001 Forensic Medicine. Medical jurisprudence. Legal medicine
Divisions: Pharmacy & Biomolecular Sciences
Publisher: Elsevier
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Date Deposited: 20 Jan 2021 11:46
Last Modified: 04 Sep 2021 06:15
DOI or Identification number: 10.1016/j.forsciint.2020.110551
URI: https://researchonline.ljmu.ac.uk/id/eprint/14158

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