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Journal article 817 views

Vibration and symmetry-breaking of boron nitride nanotubes

Rajib Chowdhury, Sondipon Adhikari, Chengyuan Wang Orcid Logo


Swansea University Authors: Rajib Chowdhury, Sondipon Adhikari, Chengyuan Wang Orcid Logo

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DOI (Published version): 10.1088/0957-4484/21/36/365702

Published in: Nanotechnology
Published: 2010
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Item Description: The unique features of axial, torsional, transverse and radial breathing vibrations are captured for armchair and zigzag singlewalled boron nitride nanotubes (BNNTs) based on molecular mechanics simulations and continuum mechanics theories. Equivalent Young's modulus 1 TPa and shear modulus 0.4 TPa are obtained independent of the chirality of BNNTs. In particular, a distorted optimized structure is observed for the first time for BNNTs with sufficiently large diameter and length. It is found that the deformed structures result in behaviours of BNNTs deviating from those of classical columns/beams. Such symmetry-breaking could also exert significant impacts on the structural instability (buckling) and electronic properties of BNNTs that are sensitive to the structural symmetry.Impact Factor: 3.644
College: Faculty of Science and Engineering