Electromechanical Instability in Suspended Carbon Nanotubes (original) (raw)
2005, Nano Letters
https://doi.org/10.1021/NL050531R
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Abstract
We have theoretically investigated electromechanical properties of freely suspended carbon nanotubes when a current is injected into the tubes using a scanning tunneling microscope. We show that a shuttle-like electromechanical instability can occur if the bias voltage exceeds a dissipation-dependent threshold value. An instability results in large amplitude vibrations of the carbon nanotube bending mode, which modify the current-voltage characteristics of the system.
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