Van der Waals and Casimir interactions between atoms and carbon nanotubes

Details Van der Waals and Casimir interactions between atoms and carbon nanotubes Van der Waals and Casimir interactions between atoms and carbon nanotubes

2008-02-09

arxiv.org/abs/0802.1276v1

J. Phys. A: Math. Theor, v.41, N16, p.164012 -(1-8), 2008.

Physics

Condensed Matter

Statistical Mechanics

9 pages, 2 figures, Proceedings of QFEXT07, to appear in J. Phys. A

Scientific paper

10.1088/1751-8113/41/16/164012

The van der Waals and Casimir interactions of a hydrogen atom (molecule) with a single-walled and a multiwalled carbon nanotubes are compared. It is shown that the macroscopic concept of graphite dielectric permittivity is already applicable for nanotubes with only two or three walls. The absorption of hydrogen atoms by a nanotube at separations below one nanometer is considered. The lateral force due to exchange repulsion moves the atom to a position above the cell center, where it is absorbed by the nanotube because the repulsive force cannot balance the van der Waals attraction.

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