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Collapse of double-walled carbon nanotube bundles under hydrostatic pressure

Gadagkar, Vikram and Maiti, Prabal K and Lansac, Yves and Jagota, A and Sood, AK (2006) Collapse of double-walled carbon nanotube bundles under hydrostatic pressure. In: Physical Review B, 73 (8). 085402-1-085402-6.

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We use classical molecular dynamics simulations to study the collapse of single (SWNT) and double-walled (DWNT) carbon nanotube bundles under hydrostatic pressure. The collapse pressure (p(c)) varies as 1/R-3, where R is the SWNT radius or the DWNT effective radius. The bundles show similar to 30% hysteresis and the hexagonally close packed lattice is completely restored on decompression. The p(c) of DWNT is found to be close to the sum of its values for the inner and the outer tubes considered separately as SWNT, demonstrating that the inner tube supports the outer tube and that the effective bending stiffness of DWNT, D-DWNT similar to 2D(SWNT). We use an elastica formulation to derive the scaling and the collapse behavior of DWNT and multiwalled carbon nanotubes.

Item Type: Journal Article
Publication: Physical Review B
Publisher: American Physical Society
Additional Information: Copyright of this article belongs to American Physical Society.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 11 Mar 2009 09:47
Last Modified: 19 Sep 2010 05:24
URI: http://eprints.iisc.ac.in/id/eprint/18536

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