Extreme oxygen sensitivity of electronic properties of carbon nanotubes

  title={Extreme oxygen sensitivity of electronic properties of carbon nanotubes},
  author={John Collins and Bradley and Ishigami and Zettl},
  volume={287 5459},
The electronic properties of single-walled carbon nanotubes are shown here to be extremely sensitive to the chemical environment. Exposure to air or oxygen dramatically influences the nanotubes' electrical resistance, thermoelectric power, and local density of states, as determined by transport measurements and scanning tunneling spectroscopy. These electronic parameters can be reversibly "tuned" by surprisingly small concentrations of adsorbed gases, and an apparently semiconducting nanotube… CONTINUE READING
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