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arXiv · 0902.4184

Selective excitations of trasverse vibrational modes of a carbon nanotube through a "shuttle-like" electromechanical instability

Fabio Santandrea
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Abstract

We study the dynamics of transverse oscillations of a suspended carbon nanotube into which current is injected from the tip of a scanning tunneling microscope (STM). In this case the correlations between the displacement of the nanotube and its charge state, determined by the position-dependent electron tunneling rate, can lead to a "shuttle-like" instability for the transverse vibrational modes. We find that selective excitation of a specific mode can be achieved by an accurate positioning of the STM tip. This result suggests a feasible way to control the dynamics of this nano-electromechanical system (NEMS) based on the "shuttle instability".

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Fabio Santandrea. 2009-02-24. Selective excitations of trasverse vibrational modes of a carbon nanotube through a "shuttle-like" electromechanical instability. https://doi.org/10.1155/2010/493478

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