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In situ formation of onion-like carbon from the evaporation of ultra-dispersed nanodiamonds

Lookup NU author(s): Satheesh Krishnamurthy, Dr Yuriy Butenko, Professor Lidija Siller

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Abstract

We report the in situ formation of onion-like carbon (OLC) by evaporation from a nanodiamond source under ultra-high vacuum conditions. The OLC is characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) and is found to be highly defective but completely separated. The absence of any signature in XPS, Raman spectra and TEM associated with nanodiamond in the film suggests that the OLC is formed from carbon vapor or by the direct evaporation of only the smallest particles resulting from nanodiamond graphitization. The method thus provides a route to the formation of individually separated OLC nanoparticles. (C) 2012 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Krishnamurthy S, Butenko YV, Dhanak VR, Hunt MRC, Siller L

Publication type: Article

Publication status: Published

Journal: Carbon

Year: 2013

Volume: 52

Pages: 145-149

Print publication date: 16/09/2012

ISSN (print): 0008-6223

ISSN (electronic): 1873-3891

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/j.carbon.2012.09.015

DOI: 10.1016/j.carbon.2012.09.015

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