Electromechanical instability in suspended carbon nanotubes
Artikel i vetenskaplig tidskrift, 2005
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. © 2005 American Chemical Society.
Quantum theory
Capacitance
Oscillations
Mathematical models
Current voltage characteristics
Electric resistance
Scanning tunneling microscopy
Electrochemistry
Electromechanical devices
Electric potential
Vibrations (mechanical)
Carbon nanotubes
Elastic moduli