Latent fingermark detection using functionalised silicon oxide nanoparticles: Method optimisation and evaluation

Lee, PLT; Kanodarwala, FK; Lennard, C; Spindler, X; Spikmans, V; Roux, C; Moret, S

Latent fingermark detection using functionalised silicon oxide nanoparticles: Method optimisation and evaluation

Lee, PLT

Kanodarwala, FK Lennard, C Spindler, X

Spikmans, V Roux, C

Moret, S

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Publication Type:: Journal Article
Citation:: Forensic Science International, 2019, 298 pp. 372 - 383
Issue Date:: 2019-05-01

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Field	Value	Language
dc.contributor.author	Lee, PLT https://orcid.org/0000-0003-4334-7410	en_US
dc.contributor.author	Kanodarwala, FK	en_US
dc.contributor.author	Lennard, C	en_US
dc.contributor.author	Spindler, X https://orcid.org/0000-0001-6379-351X	en_US
dc.contributor.author	Spikmans, V	en_US
dc.contributor.author	Roux, C https://orcid.org/0000-0003-3610-420X	en_US
dc.contributor.author	Moret, S https://orcid.org/0000-0001-5099-4697	en_US
dc.date.available	2019-02-22	en_US
dc.date.issued	2019-05-01	en_US
dc.identifier.citation	Forensic Science International, 2019, 298 pp. 372 - 383	en_US
dc.identifier.issn	0379-0738	en_US
dc.identifier.uri	http://hdl.handle.net/10453/136048
dc.description.abstract	© 2019 Elsevier B.V. The application of nanoparticles for latent fingermark detection has been reported in the literature over the past two decades. One of the nanoparticles that shows promise to become a routine technique is functionalised silicon oxide nanoparticles (SiO 2 NPs). In a recent optimisation of the technique, the use of carboxyl-functionalised SiO 2 NPs doped with luminescent ruthenium complex was proposed as a breakthrough for latent fingermark detection. In this study, the aforementioned functionalised SiO 2 NPs were extensively evaluated. Modification and optimisation of the original detection parameters were performed to enhance detection quality and improve applicability. Various detection parameters were evaluated and assessed. A lower concentration of the functionalised nanoparticles used in the colloidal dispersion was determined to offer improved detection effectiveness. A combination of increased bath temperature and reduced immersion time was found to produce good overall results. A set of modified detection parameters was suggested for the use of the functionalised SiO 2 NPs to detect latent fingermarks. Performance of the modified detection parameters was compared against that of the published detection method. Comparison experiments were carried out on fingermark specimens deposited on aluminium foil, transparent polypropylene plastic and green polyethylene plastic. Three donors (weak, average and strong) and two age intervals (ten days and three months) were considered in the comparison study. Evaluation of the results suggested that the overall performance of the modified method for latent fingermark detection was superior to that obtained using the previously published detection parameters.	en_US
dc.relation	http://purl.org/au-research/grants/arc/LP160100351
dc.relation.ispartof	Forensic Science International	en_US
dc.relation.isbasedon	10.1016/j.forsciint.2019.02.038	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	Legal & Forensic Medicine	en_US
dc.title	Latent fingermark detection using functionalised silicon oxide nanoparticles: Method optimisation and evaluation	en_US
dc.type	Journal Article
utslib.citation.volume	298	en_US
utslib.for	0699 Other Biological Sciences	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 - CFS - Centre for Forensic Science
utslib.copyright.status	open_access	*
pubs.publication-status	Published	en_US
pubs.volume	298	en_US

Abstract:

© 2019 Elsevier B.V. The application of nanoparticles for latent fingermark detection has been reported in the literature over the past two decades. One of the nanoparticles that shows promise to become a routine technique is functionalised silicon oxide nanoparticles (SiO 2 NPs). In a recent optimisation of the technique, the use of carboxyl-functionalised SiO 2 NPs doped with luminescent ruthenium complex was proposed as a breakthrough for latent fingermark detection. In this study, the aforementioned functionalised SiO 2 NPs were extensively evaluated. Modification and optimisation of the original detection parameters were performed to enhance detection quality and improve applicability. Various detection parameters were evaluated and assessed. A lower concentration of the functionalised nanoparticles used in the colloidal dispersion was determined to offer improved detection effectiveness. A combination of increased bath temperature and reduced immersion time was found to produce good overall results. A set of modified detection parameters was suggested for the use of the functionalised SiO 2 NPs to detect latent fingermarks. Performance of the modified detection parameters was compared against that of the published detection method. Comparison experiments were carried out on fingermark specimens deposited on aluminium foil, transparent polypropylene plastic and green polyethylene plastic. Three donors (weak, average and strong) and two age intervals (ten days and three months) were considered in the comparison study. Evaluation of the results suggested that the overall performance of the modified method for latent fingermark detection was superior to that obtained using the previously published detection parameters.

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http://hdl.handle.net/10453/136048