Effect of water immersion on multi- and mono-metallic VMD

Steiner, R; Bécue, A

Effect of water immersion on multi- and mono-metallic VMD

Steiner, R

Bécue, A

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Publication Type:: Journal Article
Citation:: Forensic Science International, 2018, 283 pp. 118 - 127
Issue Date:: 2018-02-01

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Field	Value	Language
dc.contributor.author	Steiner, R https://orcid.org/0000-0002-7345-3401	en_US
dc.contributor.author	Bécue, A	en_US
dc.date.available	2017-12-10	en_US
dc.date.issued	2018-02-01	en_US
dc.identifier.citation	Forensic Science International, 2018, 283 pp. 118 - 127	en_US
dc.identifier.issn	0379-0738	en_US
dc.identifier.uri	http://hdl.handle.net/10453/128781
dc.description.abstract	© 2017 Elsevier B.V. The use of vacuum metal deposition (VMD) for fingermark detection has been known for almost 40 years. The technique is applicable on a wide variety of substrates and on wetted items. Several publications compare the relative efficiency of VMD (conventionally based on a successive vaporization of gold followed by zinc) with other detection techniques, or its ability to detect marks on difficult substrates, but few are known about the application of monometallic VMDs and about the impact of immersion on the detection performances. This study aims at partially filling that gap by offering a quantitative and qualitative glance at three VMD processes (i.e., gold/zinc, silver, and sterling silver) applied to dry and wetted substrates. The impact of immersion on the detection process has been studied by using split marks (one half kept dry, the other one wetted). On immersed substrates, a modification of colour shades has been observed with monometallic VMDs (on all substrates considered) and of contrast with conventional VMD (on polyethylene). In terms of ridge details, a relatively good resistance of secretion residue towards immersion has been emphasized (in regards with VMD). This study provides original data, which will hopefully help getting a better understanding of the VMD detection mechanism.	en_US
dc.relation.ispartof	Forensic Science International	en_US
dc.relation.isbasedon	10.1016/j.forsciint.2017.12.020	en_US
dc.subject.classification	Legal & Forensic Medicine	en_US
dc.title	Effect of water immersion on multi- and mono-metallic VMD	en_US
dc.type	Journal Article
utslib.citation.volume	283	en_US
utslib.for	0699 Other Biological Sciences	en_US
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	283	en_US

Abstract:

© 2017 Elsevier B.V. The use of vacuum metal deposition (VMD) for fingermark detection has been known for almost 40 years. The technique is applicable on a wide variety of substrates and on wetted items. Several publications compare the relative efficiency of VMD (conventionally based on a successive vaporization of gold followed by zinc) with other detection techniques, or its ability to detect marks on difficult substrates, but few are known about the application of monometallic VMDs and about the impact of immersion on the detection performances. This study aims at partially filling that gap by offering a quantitative and qualitative glance at three VMD processes (i.e., gold/zinc, silver, and sterling silver) applied to dry and wetted substrates. The impact of immersion on the detection process has been studied by using split marks (one half kept dry, the other one wetted). On immersed substrates, a modification of colour shades has been observed with monometallic VMDs (on all substrates considered) and of contrast with conventional VMD (on polyethylene). In terms of ridge details, a relatively good resistance of secretion residue towards immersion has been emphasized (in regards with VMD). This study provides original data, which will hopefully help getting a better understanding of the VMD detection mechanism.

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http://hdl.handle.net/10453/128781