Controlled driven oscillations of double-walled carbon nanotubesA. 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
received 23 April 2009; accepted in final form 18 June 2009; published July 2009
published online 21 July 2009
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.
61.46.-w - Structure of nanoscale materials.
85.35.Kt - Nanotube devices.
© EPLA 2009