Optical sensitisation of energetic crystals with gold nanoparticles for laser ignition

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dc.contributor.authorFang, Xiao
dc.contributor.authorSharma, Mishminder
dc.contributor.authorStennett, Christopher
dc.contributor.authorGill, Philip P.
dc.date.accessioned2017-05-24T15:05:54Z
dc.date.available2017-05-24T15:05:54Z
dc.date.issued2017-05-18
dc.description.abstractThe laser ignition of explosives is safer and more environmentally beneficial than electric ignition systems, but optical sensitisers must be present to facilitate heating by optical absorption. We investigated, for the first time, the optical sensitisation of cyclotrimethylenetrinitramine (RDX) crystals by doping them with gold nanoparticles to enhance laser ignitibility using a near-infrared diode laser. RDX crystals physically coated with gold nanoparticles or recrystallised from a solution containing gold nanoparticles were tested for optical sensitisation by micro-imaging with a scanning electron microscope, and high-speed video was used to experimentally observe the enhanced laser ignitibility. The gold nanoparticles achieved effective optical sensitisation and significantly enhanced the laser ignitibility of RDX, reducing the laser ignition threshold power from more than 45 W to as little as 1 W. Our results show that gold nanoparticles are effective as optical sensitisers for the ignition of energetic materials using a small, low-power diode laser.en_UK
dc.identifier.citationFang X, Sharma M, Stennett C, Gill PP. (2017) Optical sensitisation of energetic crystals with gold nanoparticles for laser ignition. Combustion and Flame, Volume 183, September 2017, pp. 15-21en_UK
dc.identifier.cris17488567
dc.identifier.urihttps://doi.org/10.1016/j.combustflame.2017.05.002
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/11927
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleOptical sensitisation of energetic crystals with gold nanoparticles for laser ignitionen_UK
dc.typeArticleen_UK

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