Elastic Properties of C and BxCyNz Composite Nanotubes

Physics – Condensed Matter – Materials Science

Scientific paper

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To appear in Physical Review Letters, 4 pages, 3 encapsulated postscript figures

Scientific paper

10.1103/PhysRevLett.80.4502

We present a comparative study of the energetic, structural and elastic properties of carbon and composite single-wall nanotubes, including BN, BC3 and BC2N nanotubes, using a non-orthogonal tight-binding formalism. Our calculations predict that carbon nanotubes have a higher Young modulus than any of the studied composite nanotubes, and of the same order as that found for defect-free graphene sheets. We obtain good agreement with the available experimental results.

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