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arXiv · 0707.2492

Structural transformations of double-walled carbon nanotube bundle under hydrostatic pressure

Xiaoping Yang·Gang Wu·Jinming Dong
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Abstract

Three kinds of the response mechanisms to the external pressure have been found for double-walled carbon nanotube (DWNT) bundle, depending strongly on their average radius and symmetry. The small-diameter DWNT bundle undergoes a small discontinuous volume change, and then deform continuously. The intermediate-diameter DWNT bundle collapses completely after a structure phase transition (SPT). Significantly, two SPTs exist for the larger-diameter DWNT bundle if the outer tube has no $C_{6}$ or $C_{3}$ symmetry. It would be interesting to search for signatures of these different structural transformations by experimentally investigating mechanical, optical and thermal response functions of DWNT bundle.

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Xiaoping Yang, Gang Wu, Jinming Dong. 2007-07-17. Structural transformations of double-walled carbon nanotube bundle under hydrostatic pressure. https://doi.org/10.1063/1.2266529

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