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Article: Gold nanoparticles and imaging mass spectrometry: Double imaging of latent fingerprints

TitleGold nanoparticles and imaging mass spectrometry: Double imaging of latent fingerprints
Authors
Issue Date2010
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/ac
Citation
Analytical Chemistry, 2010, v. 82 n. 5, p. 1589-1593 How to Cite?
AbstractLatent fingerprint (LFP) detection is a top-priority task in forensic science. It is a simple and effective means for the identification of individuals. Development of nanomaterials which maximize the surface interaction with endogenous substances on the ridges to enhance the contrast of the fingerprints is an important application of nanotechnology in LFP detection. However, most developments in this area have mainly focused on the visualization of the physical pattern of the fingerprints and failed to explore the molecular information embedded in LFPs. Here, we have integrated certain distinctive properties of gold nanoparticles (AuNPs) with imaging mass spectrometry for both the visualization and molecular imaging of LFPs. Two contrasting colors (blue and pink), arising from different surface plasmon resonance (SPR) bands of the AuNPs, reveal the optical images of LFPs. The laser desorption/ionization property of the AuNPs allows the direct analysis of endogenous and exogenous compounds embedded in LFPs and imaging their distributions without disturbing the fingerprint patterns. The simultaneous visualization of LFP and the recording of its molecular images not only provide evidence on individual identity but also resolve overlapping fingerprints and detect hazardous substances. © 2010 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/68844
ISSN
2015 Impact Factor: 5.886
2015 SCImago Journal Rankings: 2.369
ISI Accession Number ID
Funding AgencyGrant Number
Area of Excellence SchemeGrant AoE/P-10/01
University Grant Council (Hong Kong SAR, China)
Strategic Research Theme on Drug administered
University of Hong Kong
Funding Information:

We thank Mr. Frankie Y. F. Chan of the Electron Microscope Unit of The University of Hong Kong for assisting in the TEM measurements. This project is supported by the Area of Excellence Scheme (Grant AoE/P-10/01) administered by the University Grant Council (Hong Kong SAR, China) and the Strategic Research Theme on Drug administered by the University of Hong Kong.

References

 

DC FieldValueLanguage
dc.contributor.authorTang, HWen_HK
dc.contributor.authorLu, Wen_HK
dc.contributor.authorChe, CMen_HK
dc.contributor.authorNg, KMen_HK
dc.date.accessioned2010-09-06T06:08:14Z-
dc.date.available2010-09-06T06:08:14Z-
dc.date.issued2010en_HK
dc.identifier.citationAnalytical Chemistry, 2010, v. 82 n. 5, p. 1589-1593en_HK
dc.identifier.issn0003-2700en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68844-
dc.description.abstractLatent fingerprint (LFP) detection is a top-priority task in forensic science. It is a simple and effective means for the identification of individuals. Development of nanomaterials which maximize the surface interaction with endogenous substances on the ridges to enhance the contrast of the fingerprints is an important application of nanotechnology in LFP detection. However, most developments in this area have mainly focused on the visualization of the physical pattern of the fingerprints and failed to explore the molecular information embedded in LFPs. Here, we have integrated certain distinctive properties of gold nanoparticles (AuNPs) with imaging mass spectrometry for both the visualization and molecular imaging of LFPs. Two contrasting colors (blue and pink), arising from different surface plasmon resonance (SPR) bands of the AuNPs, reveal the optical images of LFPs. The laser desorption/ionization property of the AuNPs allows the direct analysis of endogenous and exogenous compounds embedded in LFPs and imaging their distributions without disturbing the fingerprint patterns. The simultaneous visualization of LFP and the recording of its molecular images not only provide evidence on individual identity but also resolve overlapping fingerprints and detect hazardous substances. © 2010 American Chemical Society.en_HK
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/acen_HK
dc.relation.ispartofAnalytical Chemistryen_HK
dc.titleGold nanoparticles and imaging mass spectrometry: Double imaging of latent fingerprintsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0003-2700&volume=82&issue=5&spage=1589–1593&epage=&date=2010&atitle=Gold+nanoparticles+and+imaging+mass+spectrometry:+double+imaging+of+latent+fingerprintsen_HK
dc.identifier.emailLu, W:luwei@hku.hken_HK
dc.identifier.emailChe, CM:cmche@hku.hken_HK
dc.identifier.emailNg, KM:kwanmng@hku.hken_HK
dc.identifier.authorityLu, W=rp00754en_HK
dc.identifier.authorityChe, CM=rp00670en_HK
dc.identifier.authorityNg, KM=rp00766en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/ac9026077en_HK
dc.identifier.pmid20128591-
dc.identifier.scopuseid_2-s2.0-77749334250en_HK
dc.identifier.hkuros170048en_HK
dc.identifier.hkuros246941-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77749334250&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume82en_HK
dc.identifier.issue5en_HK
dc.identifier.spage1589en_HK
dc.identifier.epage1593en_HK
dc.identifier.isiWOS:000274841300006-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridTang, HW=16231745000en_HK
dc.identifier.scopusauthoridLu, W=27868087600en_HK
dc.identifier.scopusauthoridChe, CM=7102442791en_HK
dc.identifier.scopusauthoridNg, KM=26026091100en_HK
dc.identifier.citeulike7904838-

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