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Microwave properties of nanodiamond particles

Slocombe, Daniel Rhys ORCID:, Porch, Adrian ORCID:, Bustarret, Etienne and Williams, Oliver A. 2013. Microwave properties of nanodiamond particles. Applied Physics Letters 102 (24) , 244102. 10.1063/1.4809823

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The dielectric properties of nanodiamond powders were characterised at microwave frequencies using a cavity perturbation technique, and results were compared with UV Raman spectroscopy. Surface sp2 hybridisation in the nanodiamond samples was varied by subsequent oxygenation and hydrogenation. Dielectric polarisation and loss increased as the sp2 hybridisation was increased. The sensitivity to surface bound sp2 carbon obtained by the microwave cavity technique far exceeds that of comparable techniques (such as Raman spectroscopy) and is much more convenient in practice, lending itself to studies of real-time modification of such powders by external influences (such as temperature and chemical functionalisation).

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Engineering
Subjects: Q Science > Q Science (General)
Publisher: American Institute of Physics
ISSN: 0003-6951
Funders: EPSRC, Royal Society Research Grant
Date of Acceptance: 23 May 2013
Last Modified: 01 Nov 2022 11:09

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