Effect of defects on oscillation characteristics and instability of carbon nanotube-based oscillators

Liu, P.; Gao, H. J.; Zhang, Y. W.
August 2008
Applied Physics Letters;8/25/2008, Vol. 93 Issue 8, p083107
Academic Journal
The oscillatory characteristics and the instability of double- and triple-walled carbon nanotube-based oscillators containing a vacancy or a Stone–Wales (SW) defect were investigated by molecular dynamics simulations. It was found that the existence of these defects markedly affects the oscillation period and amplitude. The defect-free oscillators are most stable, followed by oscillators containing a SW defect, while oscillators containing a vacancy are least stable. The origin of the defect-induced instability is due to the change in potential energy profile and the resulting force fluctuation.


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