Fingermark detection on non-porous and semi-porous surfaces using YVO4: Er,Yb luminescent

Rongliang Ma, Ronald Shimmon, Andrew McDonagh, Phillip Maynard, Christopher Lennard, Claude Roux

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

This article describes the use of an anti-Stokes luminescent material (upconverter), yttrium vanadate doped with ytterbium and erbium (YVO4:Er,Yb), for the development of latent fingermarks on a range of non-porous surfaces. Anti-Stokes luminescent materials emit light at shorter wavelengths than the excitation wavelength. This property is unusual in both natural and artificial materials commonly found as exhibits in forensic science casework. As a result, fingermark detection techniques based on anti-Stokes luminescence are potentially extremely sensitive and selective.

Latent fingermarks on non-luminescent and inherently luminescent substrates, including Australian polymer banknotes (a well-known ‘difficult’ surface), were developed with YVO4:Er,Yb by dry powder and wet powder techniques. The effectiveness of YVO4:Er,Yb for fingermark detection was compared with that of cyanoacrylate fuming and of sodium yttrium tetrafluoride doped with ytterbium and erbium (NaYF4:Er,Yb). The results illustrate some benefit of luminescent up-converting phosphors over traditional luminescence techniques for the detection of latent fingermarks
Original languageEnglish
Pages (from-to)e23-e26
Number of pages4
JournalForensic Science International
Volume217
Issue number1-3
DOIs
Publication statusPublished - 2012

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Ytterbium
Erbium
Yttrium
Luminescence
Powders
Cyanoacrylates
Forensic Sciences
Vanadates
Polymers
Sodium
Light

Cite this

Ma, Rongliang ; Shimmon, Ronald ; McDonagh, Andrew ; Maynard, Phillip ; Lennard, Christopher ; Roux, Claude. / Fingermark detection on non-porous and semi-porous surfaces using YVO4: Er,Yb luminescent. In: Forensic Science International. 2012 ; Vol. 217, No. 1-3. pp. e23-e26.
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Fingermark detection on non-porous and semi-porous surfaces using YVO4: Er,Yb luminescent. / Ma, Rongliang; Shimmon, Ronald; McDonagh, Andrew; Maynard, Phillip; Lennard, Christopher; Roux, Claude.

In: Forensic Science International, Vol. 217, No. 1-3, 2012, p. e23-e26.

Research output: Contribution to journalArticle

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T1 - Fingermark detection on non-porous and semi-porous surfaces using YVO4: Er,Yb luminescent

AU - Ma, Rongliang

AU - Shimmon, Ronald

AU - McDonagh, Andrew

AU - Maynard, Phillip

AU - Lennard, Christopher

AU - Roux, Claude

PY - 2012

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AB - This article describes the use of an anti-Stokes luminescent material (upconverter), yttrium vanadate doped with ytterbium and erbium (YVO4:Er,Yb), for the development of latent fingermarks on a range of non-porous surfaces. Anti-Stokes luminescent materials emit light at shorter wavelengths than the excitation wavelength. This property is unusual in both natural and artificial materials commonly found as exhibits in forensic science casework. As a result, fingermark detection techniques based on anti-Stokes luminescence are potentially extremely sensitive and selective.Latent fingermarks on non-luminescent and inherently luminescent substrates, including Australian polymer banknotes (a well-known ‘difficult’ surface), were developed with YVO4:Er,Yb by dry powder and wet powder techniques. The effectiveness of YVO4:Er,Yb for fingermark detection was compared with that of cyanoacrylate fuming and of sodium yttrium tetrafluoride doped with ytterbium and erbium (NaYF4:Er,Yb). The results illustrate some benefit of luminescent up-converting phosphors over traditional luminescence techniques for the detection of latent fingermarks

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KW - Fingerprint Detection

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U2 - 10.1016/J.FORSCIINT.2011.10.033

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