Styryl dye coated metal oxide powders for the detection of latent fingermarks on non-porous surfaces

Chadwick, S; Maynard, P; Kirkbride, P; Lennard, C; McDonagh, A; Spindler, X; Roux, C

Styryl dye coated metal oxide powders for the detection of latent fingermarks on non-porous surfaces

Chadwick, S

Maynard, P

Kirkbride, P Lennard, C

McDonagh, A

Spindler, X

Roux, C

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Publication Type:: Journal Article
Citation:: Forensic Science International, 2012, 219 (1-3), pp. 208 - 214
Issue Date:: 2012-06-10

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Field	Value	Language
dc.contributor.author	Chadwick, S https://orcid.org/0000-0003-2006-9841	en_US
dc.contributor.author	Maynard, P https://orcid.org/0000-0003-4953-9114	en_US
dc.contributor.author	Kirkbride, P	en_US
dc.contributor.author	Lennard, C https://orcid.org/0000-0002-9164-7103	en_US
dc.contributor.author	McDonagh, A https://orcid.org/0000-0002-9502-1175	en_US
dc.contributor.author	Spindler, X https://orcid.org/0000-0001-6379-351X	en_US
dc.contributor.author	Roux, C https://orcid.org/0000-0003-3610-420X	en_US
dc.date.available	2012-01-03	en_US
dc.date.issued	2012-06-10	en_US
dc.identifier.citation	Forensic Science International, 2012, 219 (1-3), pp. 208 - 214	en_US
dc.identifier.issn	0379-0738	en_US
dc.identifier.uri	http://hdl.handle.net/10453/32186
dc.description.abstract	Conventional fingermark powders rely on contrast induced by absorption/reflection (e.g. black powder) or luminescence in the visible region (e.g. Blitz Green ®). In most cases, these powders provide sufficient contrast; however, in some circumstances surface characteristics can interfere with the visualisation of powdered fingermarks. Visualisation in the near infra-red (NIR) region, however, has been shown to eliminate interferences commonly encountered in the visible region. In this study, a mixture of rhodamine 6G and the NIR laser dye styryl 11 (STaR 11) was coated onto an aluminium oxide nanopowder and then mixed with silver magnetic powder to develop and visualise fingermarks in the NIR. When compared to Blitz Green ®, it was determined that the STaR 11 magnetic powder was better suited for marks deposited on textured surfaces and for older marks, whereas Blitz Green ® performed better on smooth glossy surfaces. The ability of the STaR 11 mixed dye formulation to be visualised in both the visible and NIR regions also provides a significant advantage over conventional luminescent fingermark powders. © 2012 Elsevier Ireland Ltd.	en_US
dc.relation	http://purl.org/au-research/grants/arc/LP0991027R2
dc.relation.ispartof	Forensic Science International	en_US
dc.relation.isbasedon	10.1016/j.forsciint.2012.01.006	en_US
dc.subject.classification	Legal & Forensic Medicine	en_US
dc.subject.mesh	Humans	en_US
dc.subject.mesh	Aluminum Oxide	en_US
dc.subject.mesh	Silver	en_US
dc.subject.mesh	Aniline Compounds	en_US
dc.subject.mesh	Quinolinium Compounds	en_US
dc.subject.mesh	Rhodamines	en_US
dc.subject.mesh	Powders	en_US
dc.subject.mesh	Fluorescent Dyes	en_US
dc.subject.mesh	Dermatoglyphics	en_US
dc.subject.mesh	Surface Properties	en_US
dc.subject.mesh	Light	en_US
dc.subject.mesh	Luminescence	en_US
dc.subject.mesh	Nanoparticles	en_US
dc.title	Styryl dye coated metal oxide powders for the detection of latent fingermarks on non-porous surfaces	en_US
dc.type	Journal Article
utslib.citation.volume	1-3	en_US
utslib.citation.volume	219	en_US
utslib.for	069901 Forensic Biology	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
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
pubs.organisational-group	/University of Technology Sydney/Strength - CFS - Centre for Forensic Science
utslib.copyright.status	closed_access
pubs.issue	1-3	en_US
pubs.publication-status	Published	en_US
pubs.volume	219	en_US

Abstract:

Conventional fingermark powders rely on contrast induced by absorption/reflection (e.g. black powder) or luminescence in the visible region (e.g. Blitz Green ®). In most cases, these powders provide sufficient contrast; however, in some circumstances surface characteristics can interfere with the visualisation of powdered fingermarks. Visualisation in the near infra-red (NIR) region, however, has been shown to eliminate interferences commonly encountered in the visible region. In this study, a mixture of rhodamine 6G and the NIR laser dye styryl 11 (STaR 11) was coated onto an aluminium oxide nanopowder and then mixed with silver magnetic powder to develop and visualise fingermarks in the NIR. When compared to Blitz Green ®, it was determined that the STaR 11 magnetic powder was better suited for marks deposited on textured surfaces and for older marks, whereas Blitz Green ® performed better on smooth glossy surfaces. The ability of the STaR 11 mixed dye formulation to be visualised in both the visible and NIR regions also provides a significant advantage over conventional luminescent fingermark powders. © 2012 Elsevier Ireland Ltd.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/32186