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Título

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

AutorSolís Fernández, Pablo ; Paredes Nachón, Juan Ignacio ; Martínez Alonso, Amelia ; Díez Tascón, Juan Manuel
Palabras claveOriented pyrolytic-graphite
Scanning-tunneling-microscopy
Activated Carbon
Oxygen plasma
Pressure
Oxidation
Argon
Fecha de publicación3-jun-2008
EditorElsevier
CitaciónCarbon 46(10): 1364-1367 (2008)
ResumenThe 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).
Descripción4 pages, 3 figures.-- Printed version published Aug 2008.
Versión del editorhttp://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
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