“School of Nano-Sciences”
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| Paper IPM / Nano-Sciences / 14773 |
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| Abstract: | |||||||||
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Telescopic oscillation of nested carbon nanotubes is capable of generating GHz frequency. A main challenge
against their practical applications is how to control and tune such oscillations. In this paper, we demonstrate
that by displacing the tip of a semi-infinite tube inside a conventional double-walled oscillatory system, we can
change the vdW force distribution acting on the oscillating tube. By changing this distribution, the dynamics of
the system is altered; hence, the oscillations are retuned. The positioning of the tip can be controlled externally
by moving its other end. The proposed mechanism provides a solution to control and tune this type of oscillatory
systems during the course of oscillations. Concerning the different system parameters (i.e. geometrical parameters and initial conditions), we perform a thorough study to reveal how the oscillatory frequency will change by moving the tip of the semi-infinite tube.
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