Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/11299
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Title

New atomic-scale features in graphite surfaces treated in a dielectric barrier discharge plasma

AuthorsSolís Fernández, Pablo CSIC; Paredes Nachón, Juan Ignacio CSIC ORCID ; Martínez Alonso, Amelia CSIC ORCID ; Díez Tascón, Juan Manuel CSIC ORCID
KeywordsOriented pyrolytic-graphite
Scanning-tunneling-microscopy
Activated carbon
Oxygen plasma
Pressure
Oxidation
Argon
Issue Date3-Jun-2008
PublisherElsevier
CitationCarbon 46(10): 1364-1367 (2008)
AbstractThe effects of an air plasma generated by a dielectric barrier discharge (DBD) on highly oriented pyrolytic graphite (HOPG) have been investigated through scanning tunneling microscopy (STM), Raman and XPS spectroscopies. Three main types of nanometer/atomic scale features were identified by STM: (i) small bumps, attributed to surface atomic vacancies; (ii) smooth bumps, attributed to interstitial Ar or C atoms; and (iii) depressions not previously reported for graphite, and tentatively attributed to interstitial oxygen species. The evolution of the STM features suggests that the surface modification of HOPG by an air DBD plasma is dominated by physical processes (ion bombardment).
Description4 pages, 3 figures.-- Printed version published Aug 2008.
Publisher version (URL)http://dx.doi.org/10.1016/j.carbon.2008.05.021
URIhttp://hdl.handle.net/10261/11299
DOI10.1016/j.carbon.2008.05.021
ISSN0008-6223
Appears in Collections:(INCAR) Artículos

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