Optical sensitisation of energetic crystals with gold nanoparticles for laser ignition

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dc.contributor.author Fang, Xiao
dc.contributor.author Sharma, Mishminder
dc.contributor.author Stennett, Christopher
dc.contributor.author Gill, Philip P.
dc.date.accessioned 2017-05-24T15:05:54Z
dc.date.available 2017-05-24T15:05:54Z
dc.date.issued 2017-05-18
dc.identifier.citation Fang 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. 15-21 en_UK
dc.identifier.uri https://doi.org/10.1016/j.combustflame.2017.05.002
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/11927
dc.description.abstract The 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.publisher Elsevier en_UK
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.title Optical sensitisation of energetic crystals with gold nanoparticles for laser ignition en_UK
dc.type Article en_UK
dc.identifier.cris 17488567


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