Role of defects in single-walled carbon nanotube chemical sensors.

@article{Robinson2006RoleOD,
  title={Role of defects in single-walled carbon nanotube chemical sensors.},
  author={Joshua A Robinson and Eric S. Snow and Stefan C. Badescu and Thomas L. Reinecke and F. Keith Perkins},
  journal={Nano letters},
  year={2006},
  volume={6 8},
  pages={1747-51}
}
We explore the electronic response of single-walled carbon nanotubes (SWNT) to trace levels of chemical vapors. We find adsorption at defect sites produces a large electronic response that dominates the SWNT capacitance and conductance sensitivity. This large response results from increased adsorbate binding energy and charge transfer at defect sites. Finally, we demonstrate controlled introduction of oxidation defects can be used to enhance sensitivity of a SWNT network sensor to a variety of… CONTINUE READING
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