Electromechanical instability in suspended carbon nanotubes.
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.
Jonsson
L Magnus
LM
Department of Applied Physics, Chalmers University of Technology, SE - 412 96 Göteborg, Sweden. mjonsson@fy.chalmers.se
Gorelik
Leonid Y
LY
Shekhter
Robert I
RI
Jonson
Mats
M
D002244:Carbon / Q000737:chemistry*; D003460:Crystallization; D004563:Electrochemistry / Q000379:methods; D004566:Electrodes; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D016252:Microscopy, Scanning Tunneling / Q000379:methods*; D036103:Nanotechnology / Q000379:methods; D037742:Nanotubes, Carbon / Q000737:chemistry*; D055672:Static Electricity
D046911:Macromolecular Substances; D037742:Nanotubes, Carbon; D002244:Carbon