Spherical-shell model for the van der Waals coefficients between fullerenes and/or nearly spherical nanoclusters

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Spherical-shell model for the van der Waals coefficients between fullerenes and/or nearly spherical nanoclusters.

Fullerene molecules such as C(60) are large nearly spherical shells of carbon atoms. Pairs of such molecules have a strong long-range van der Waals attraction that can produce scattering or binding into molecular crystals. A simplified classical-electrodynamics model for a fullerene is a spherical metal shell, with uniform electron density confined between outer and inner radii (just as a simpl...

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Van der waals coefficients for nanostructures: fullerenes defy conventional wisdom.

The van der Waals coefficients between quasispherical nanostructures can be modeled accurately and analytically by those of classical solid spheres (for nanoclusters) or spherical shells (for fullerenes) of uniform valence electron density, with the true static dipole polarizability. Here, we derive analytically and confirm numerically from this model the size dependencies of the van der Waals ...

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The van der Waals (dispersion) interaction between an atom and a cluster or between two clusters at large separation is calculated by considering each cluster as a point particle, characterized by a polarizability tensor. For the extreme limit of very large separation, the fully retarded regime, one needs to know just the static polarizability in order to determine the interaction. This polariz...

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ژورنال

عنوان ژورنال: Journal of Physics: Condensed Matter

سال: 2012

ISSN: 0953-8984,1361-648X

DOI: 10.1088/0953-8984/24/42/424207