University of Hertfordshire

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Original languageEnglish
Article number123704
Number of pages7
JournalJournal of Applied Physics
Volume106
Issue12
DOIs
Publication statusPublished - 1 Dec 2009

Abstract

Detonation nanodiamonds (DNDs) are an interesting class of materials for sensing applications, but little is currently understood about their electrical properties. Here, aggregated DNDs are explored with impedance spectroscopy and are found to offer near-to-ideal dielectric characteristics, which is intriguing given their nanostructure. When exposed to ammonia, two highly conductive pathways emerge through the material; these appear to be associated with grain boundary and grain interior processes, the latter potentially due to surface transfer doping. This process is reversible given modest temperature increases suggesting DNDs may offer a solid state electrical platform for ammonia sensing applications

Notes

Mose Bevilacqua, Aysha Chaudhary, and Richard B. Jackman, 'The influence of ammonia on the electrical properties of detonation nanodiamond', Journal of Applied Physics, Vol. 106, 123704 (2009), doi: 10.1063/1.3272912. Published by the American Institute of Physics

ID: 2231540