Published: Sep 4, 2014 1:29:07 PM
Published: Jun 19, 2014 11:46:40 AM
Published: Feb 4, 2014 12:17:54 PM
Detection of low levels of illicit materials, such as explosives, is a key challenge for defence and security practitioners. Recent advances in highly sensitive molecular-recognition techniques in the chemical sciences may provide a wealth of useful tools for just such a purpose. In my project the application of nanomaterials in molecular recognition and chemical sensing devices will be examined.
Two classes of nanoparticles will be utilised; noble metals (in particular gold) and semiconductor quantum dots. Initially gold nanoparticles were synthesised and examined for Raman based sensing via the popular SERS (surface-enhanced Raman spectroscopy) technique. More recently research has focussed on the design and fabrication of a multiplexed array based tool for explosives detection using fluorescent quantum dots. The surface functionality of the quantum dots will be varied using a controlled synthetic methodology to create the array, and machine-learning techniques will be applied to the resulting assay data to identify explosives present in a sample.
Other work during this project has covered the synthesis of supramolecular organogels for nanoparticle support and fluorescent metal-organic frameworks as another fluorimetric explosives detection tool.
Peveler WJ, Parkin IP. Rapid Synthesis of Gold Nanostructures with Cyclic and Linear Ketones. RSC Adv; 2013; 3:21919–27.
Peveler WJ, Binions R, Hailes SMV, Parkin IP. Detection of explosive markers using zeolite modified gas sensors. J Mater Chem A.; 2013;1(7):2613–20.
International Conference on Advanced and Nano Materials 2013 - Quebec City, CA - Poster on "Synthesis of gold nanoparticle and nanostars with cyclic and linear mono- and di-ketones"
International Crime Science Conference 2013 - London, UK - Poster on "Nanomaterials for Security Applications"
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