Vacuum metal deposition enhancement of friction ridge detail on ballistic materials
| Autor: | Jason W. Birkett, Jessica N. Pollitt, Joanne Morrissey, George Christofidis |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
010401 analytical chemistry Metallurgy chemistry.chemical_element Zinc 01 natural sciences 0104 chemical sciences Pathology and Forensic Medicine Brass 03 medical and health sciences Cartridge 0302 clinical medicine chemistry visual_art RA1001 visual_art.visual_art_medium QD 030216 legal & forensic medicine Law |
| Zdroj: | Forensic science international. 316 |
| ISSN: | 1872-6283 0379-0738 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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