Issue
EPL
Volume 87, Number 1, July 2009
Article Number 16002
Number of page(s) 5
Section Condensed Matter: Structural, Mechanical and Thermal Properties
DOI http://dx.doi.org/10.1209/0295-5075/87/16002
Published online 21 July 2009
EPL, 87 (2009) 16002
DOI: 10.1209/0295-5075/87/16002

Controlled driven oscillations of double-walled carbon nanotubes

A. Neild1, T. W. Ng1 and Q. Zheng2

1   Department of Mechanical & Aerospace Engineering, Monash University - Clayton, VIC3800, Australia
2   Department of Engineering Mechanics, Tsinghua University - Beijing, China

adrian.neild@eng.monash.edu.au

received 23 April 2009; accepted in final form 18 June 2009; published July 2009
published online 21 July 2009

Abstract
The quest to develop workable electromechanical mechanisms in the nanoscale has often been predicated on meeting the conditions of super-low damping. We show here that the use of periodic forces to drive sliding core/shell double-walled carbon nanotube architectures produces oscillating-displacement response characteristics that are far more complex than cantilever-based designs, which suggest that meeting the conditions of controllability is much more pertinent for such architectures. Knowledge of these characteristics is necessary to successfully create sliding core/shell oscillator architectures that are capable of operating at gigahertz frequencies. In this work, we investigated the cases of the core and shell having equal and unequal lengths; and show the merits of using the latter.

PACS
61.46.-w - Structure of nanoscale materials.
85.35.Kt - Nanotube devices.

© EPLA 2009