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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/172598
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- Title
- Size-reduction of nanodiamonds via air oxidation
- Related
- Diamond and related materials, Vol. 21, (2012), p.28-32
- DOI
- 10.1016/j.diamond.2011.09.002
- Publisher
- Elsevier
- Date
- 2012
- Author/Creator
- Gaebel, T
- Author/Creator
- Bradac, C
- Author/Creator
- Chen, J
- Author/Creator
- Say, J. M
- Author/Creator
- Brown, L
- Author/Creator
- Hemmer, P
- Author/Creator
- Rabeau, J. R
- Description
- Here we report the size reduction and effects on nitrogen-vacancy centres in nanodiamonds by air oxidation using a combined atomic force and confocal microscope. The average height reduction of individual crystals, as measured by atomic force microscopy, was 10 ± 1 nm/h at 600 °C, 4 ± 1 nm/h at 550 °C, and less than 1 nm/h at 500 °C from air oxidation at atmospheric pressure. The oxidation process modified the surface including removal of non-diamond carbon and organic material which also led to a decrease in background fluorescence. During the course of the nanodiamond size reduction, we observed the annihilation of nitrogen-vacancy centres which provided important insight into the behaviour of colour centres in small crystals. In these unirradiated samples, the smallest nanodiamond still hosting a stable nitrogen-vacancy centre observed was 8 nm.
- Description
- 5 page(s)
- Subject Keyword
- Nanodiamonds
- Subject Keyword
- NV defects
- Subject Keyword
- Optical properties characterization
- Subject Keyword
- Oxidation
- Resource Type
- journal article
- Organisation
- Macquarie University. Dept. of Physics and Astronomy
- Organisation
- Macquarie University. Dept. of Chemistry and Biomolecular Sciences
- Identifier
- http://hdl.handle.net/1959.14/172598
- Identifier
- ISSN:0925-9635
- Identifier
- mq-rm-2011006795
- Identifier
- mq_res-ext-2-s2.0-80755184843
- Language
- eng
- Reviewed
Macquarie University ResearchOnline
