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Title: | New atomic-scale features in graphite surfaces treated in a dielectric barrier discharge plasma |
Authors: | Solís Fernández, Pablo CSIC; Paredes Nachón, Juan Ignacio CSIC ORCID ; Martínez Alonso, Amelia CSIC ORCID ; Díez Tascón, Juan Manuel CSIC ORCID | Keywords: | Oriented pyrolytic-graphite Scanning-tunneling-microscopy Activated carbon Oxygen plasma Pressure Oxidation Argon |
Issue Date: | 3-Jun-2008 | Publisher: | Elsevier | Citation: | Carbon 46(10): 1364-1367 (2008) | Abstract: | The 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). | Description: | 4 pages, 3 figures.-- Printed version published Aug 2008. | Publisher version (URL): | http://dx.doi.org/10.1016/j.carbon.2008.05.021 | URI: | http://hdl.handle.net/10261/11299 | DOI: | 10.1016/j.carbon.2008.05.021 | ISSN: | 0008-6223 |
Appears in Collections: | (INCAR) Artículos |
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