期刊
SOLID STATE SCIENCES
卷 11, 期 10, 页码 1752-1756出版社
ELSEVIER
DOI: 10.1016/j.solidstatesciences.2008.10.010
关键词
Fullerene; Nanocarbon; Polarizability; Permittivity; Polymer film
资金
- NATO Science Program [CBP.NR.SFPP-981051]
- INTAS [06-1000013-9225]
A semi-empirical microscopic calculation of the dielectric permittivity of a thin film containing onion like carbons (OLC) has been performed. The theoretical data are found to be in quantitative agreement with Maxwell-Garnett theory and they agree qualitatively with results of a recent experimental dielectric analysis of OLC-based PMMA composites, also reported in this paper. For future applications of effective-medium theories, a simplified model of OLC cluster chains, viewed as conductive corrugated cylinders, has been developed. A perfect agreement between the polarizabilities obtained by the continuous-medium model and by full atomistic calculations is reported. This observation opens the possibility to use simplified electrostatic models to mimic complex OLC aggregates, especially in a polymer composite. (C) 2008 Elsevier Masson SAS. All rights reserved.
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