Under UV light, the nanofibrous film detects trace 2,4-DNT explosive buried in a flower pot and (left) and in soil in a Petri dish (right) (Photo: Ying Wang/UConn and Advanced Functional Materials, Wiley-VCH Verlag GmbH & Co. KGaA)
Detection of particulate explosives on a contaminated hand using the novel electrospun pyrene film ((Photo: Ying Wang/UConn and Advanced Functional Materials, Wiley-VCH Verlag GmbH & Co. KGaA)
Engineers at the University of Connecticut (UConn) have developed a fluorescent nanofibrous film capable of detecting ultra-trace levels of explosive vapors from landmines and other buried explosive devices. In the presence of explosive molecules, the film’s fluorescence is suppressed when exposed to ultraviolet (UV) light. In this way, the lightweight film, which is similar to paper, could be rolled out over suspect areas to mark the location of explosive devices.
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