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dc.contributor.authorGlackin, James Michael Edward
dc.contributor.authorGillanders, Ross Neil
dc.contributor.authorEriksson, Frans
dc.contributor.authorFjällgren, Marcus
dc.contributor.authorEngblom, Joachim
dc.contributor.authorMohammed, Salam
dc.contributor.authorSamuel, Ifor David William
dc.contributor.authorTurnbull, Graham
dc.identifier.citationGlackin , J M E , Gillanders , R N , Eriksson , F , Fjällgren , M , Engblom , J , Mohammed , S , Samuel , I D W & Turnbull , G 2020 , ' Explosives detection by swabbing for improvised explosive devices ' , Analyst .
dc.identifier.otherPURE: 270555358
dc.identifier.otherPURE UUID: e4746195-fa13-4704-85b2-39243c29980a
dc.identifier.otherORCID: /0000-0002-8825-3234/work/81797768
dc.identifier.otherWOS: 000607343400018
dc.identifier.otherScopus: 85099120719
dc.descriptionFunding: The authors acknowledge funding from the EPSRC DTG (EP/L505079/1) and EPSRC (EP/N509759/1).en
dc.description.abstractSwabs taken from the surface of a suspicious object are a standard method of identifying a concealed explosive device in security-conscious locations like airports. In this paper we demonstrate a sensitive method to collect and detect trace explosive residues from improvised explosive devices using swabs and an optical sensor element. Swabs coated with a commercial fluoropolymer are used to collect material and are subsequently heated to thermally desorb the explosives, causing the quenching of light emission from a thin film luminescent sensor. We report the sorption and desorption characteristics of swabs loaded with 2,4-DNT tested with Super Yellow fluorescence sensors in a laboratory setting, with detection that is up to three orders of magnitude more sensitive than standard colorimetric tests. The method was then applied in field tests with raw military-grade explosives TNT, PETN and RDX, on various objects containing the explosives, and post-blast craters. We show for the first time results using organic semiconductors to detect sub-milligram amounts of explosive sorbed onto a substrate from real explosives in the field, giving a promising new approach for IED detection.
dc.rightsCopyright © 2020 the Author(s). This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.en
dc.subjectOrganic semiconductoren
dc.subjectLuminescence quenchingen
dc.subjectOptical sensingen
dc.subjectSuper Yellowen
dc.subjectQC Physicsen
dc.subjectQD Chemistryen
dc.titleExplosives detection by swabbing for improvised explosive devicesen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Centre for Biophotonicsen
dc.contributor.institutionUniversity of St Andrews.Condensed Matter Physicsen
dc.contributor.institutionUniversity of St Andrews.Sir James Mackenzie Institute for Early Diagnosisen
dc.description.statusPeer revieweden

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