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Please use this identifier to cite or link to this item: http://hdl.handle.net/10373/973

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Title: Visualisation of fingermarks and grab impressions on fabrics. Part 1: gold/zinc vacuum metal deposition
Authors: Fraser, Joanna
Sturrock, Keith R.
Deacon, Paul
Bleay, Stephen
Bremner, David H.
Affiliation: University of Abertay Dundee. School of Contemporary Sciences
Keywords: Fingermark detection
Vacuum metal deposition
Fabrics
Nylon
Polyester
Polycotton
Cotton
Issue Date: May-2011
Publisher: Elsevier
Type: Journal Article
Refereed: peer-reviewed
Rights: This is the author's final version of this article. Published version (c)Elsevier, available from http://dx.doi.org/10.1016/j.forsciint.2010.11.003
Citation: Fraser, J., et al. 2011. Visualisation of fingermarks and grab impressions on fabrics. Part 1: gold/zinc vacuum metal deposition. Forensic Science International. 208(1-3): pp.74-78. Available from http://dx.doi.org/10.1016/j.forsciint.2010.11.003
Abstract: Vacuum metal deposition (VMD) is a highly sensitive technique originally introduced for detecting latent fingermarks on smooth non-porous surfaces such as carrier bags, plastics and glass. The current study explores whether VMD can be used in the examination of clothing from physical and sexual assault cases in order to visualise identifiable fingermark ridge detail and/or palmar flexion crease detail, thus allowing potential areas to be indicated for DNA swabbing and/or to determine the sequence of events. Four different fabrics were utilised during this study – nylon, polyester, polycotton and cotton, along with 15 donors who ranged in their age and propensity to leave fingermarks, from good to medium to poor as determined by results obtained from test runs using paper and plastic carrier bags processed with VMD. Once samples were collected they were kept for a determined time (1, 2, 3, 4, 5, 6, 7, 14, 21 or 28 days) and then treated using the gold/zinc metal VMD process. From the results, it appears that greater ridge detail is visible on the smoother non-porous fabrics, such as nylon whereas on rougher porous fabrics, such as cotton, only empty prints and impressions, rather than any ridge details, were visible. All fabrics did however allow the development of touch marks that could be targeted for DNA taping thus potentially leading to a DNA profile and possible identification of a suspect.
URI: http://hdl.handle.net/10373/973
ISSN: 0379-0738
Appears in Collections:Science Engineering & Technology Collection

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