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APS » Journals » Phys. Rev. Lett. » Volume 99 » Issue 4
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Phys. Rev. Lett. 99, 045501 (2007) [4 pages]

Carbon Nanostructures as an Electromechanical Bicontinuum

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Cristiano Nisoli1, Paul E. Lammert1, Eric Mockensturm2, and Vincent H. Crespi1
1Department of Physics and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802-6300, USA
2Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802-6300, USA

Received 11 April 2007; published 27 July 2007

A two-field model provides a unifying framework for elasticity, lattice dynamics and electromechanical coupling in graphene and carbon nanotubes, describes optical phonons, nontrivial acoustic branches, strain-induced gap opening, gap-induced phonon softening, doping-induced deformations, and even the hexagonal graphenic Brillouin zone, and thus explains and extends a previously disparate accumulation of analytical and computational results.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.045501
DOI:
10.1103/PhysRevLett.99.045501
PACS:
63.22.+m, 62.25.+g, 77.65.−j, 81.05.Tp
 
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