Molecular Dynamics Simulations of Carbon Nanotubes as Gigahertz Oscillators

Details Molecular Dynamics Simulations of Carbon Nanotubes as Gigahertz Oscillators Molecular Dynamics Simulations of Carbon Nanotubes as Gigahertz Oscillators

2002-09-05

arxiv.org/abs/cond-mat/0209134v1

Physics

Condensed Matter

Materials Science

4 pages, 6 figures

Scientific paper

10.1103/PhysRevLett.90.055504

Recently Zheng and Jiang [PRL 88, 045503 (2002)], based on static models, have proposed that multiwalled carbon nanotubes could be the basis for a new generation of nanooscilators in the several gigahertz range. In this work we present the first molecular dynamics simulation for these systems. Different nanotube types were considered in order to verify the reliability of such devices as gigahertz oscillators. Our results show that these nanooscillators are dynamically stables when the radii difference values between inner and outer tubes are of ~ 3.4 A. Frequencies as large as 38 GHz were observed, and the calculated force values are in good agreement with recent experimental investigations. Moreover, our results contradict some predictions made by Zheng and Jiang.

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