Studies of Carbon Nanotube-Based Oscillators Using Molecular Dynamics
Authors: Xiao, Shaoping; Andersen, David R.; Han, Ray P.; Hou, Wenyi
Source: Journal of Computational and Theoretical Nanoscience, Volume 3, Number 1, February 2006 , pp. 142-147(6)
Publisher: American Scientific Publishers
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Abstract:
In this study, we investigate some oscillation mechanisms of double-walled carbon nanotube-based oscillators using molecular dynamics. If an oscillator is an isolated system, stable oscillations of the inner tube inside of the outer tube can be observed with oscillatory frequencies as high as 72 GHz. If the same inner tube is used in designing nano-oscillators, molecular dynamics simulations illustrate that the length of the outer tube is the only consideration necessary for achieving various oscillatory frequencies. We also study the interlayer friction between the outer tube and the inner tube when nano-oscillators are at finite temperatures. A larger interlayer friction is observed in an oscillator when it is at a higher temperature, and the oscillation will stop quickly. The interlayer friction is also related to the chirality and defects in the outer tube. Based on the above studies, we propose to design a nanoelectromechanical oscillator system, which can provide stable oscillation.Keywords: NANOTUBE; OSCILLATOR; NANOELECTROMECHANICAL SYSTEM
Document Type: Research article
DOI: 10.1166/jctn.2006.013
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