Elastic Properties of Carbon nanotubes : An atomistic approach

Details Elastic Properties of Carbon nanotubes : An atomistic approach Elastic Properties of Carbon nanotubes : An atomistic approach

2007-05-23

arxiv.org/abs/0705.3429v1

Journal of Nanoscience and Nanotechnology, Volume 7, Number 6, June 2007, pp. 1779-1782(4)

Physics

Condensed Matter

Materials Science

10 pages, 4 figures

Scientific paper

Energetically the single sheet of graphite (graphene) is more stable than the nanotube. The energy difference between the two systems can be directly related to the strain energy involved in rolling up the graphene sheet to form the nanotube. We have carried out first principle electronic structure calculations and evaluated the strain energy as a function of the nanotube radius. The dependence of the strain energy on the diameter of the nanotube has been found by several groups to be welldescribed by a continuum elasticity model. We attempt to examine why this is the case and show where atomistics enter the description.

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