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Proceedings Article

Growth of nanotubes and chemical sensor applications

[+] Author Affiliations
James Hone, Philip Kim, X. M. H. Huang, B. Chandra, R. Caldwell, J. Small, B. H. Hong, T. Someya, L. Huang, S. O'Brien, Colin P. Nuckolls

Columbia Univ. (USA)

Proc. SPIE 5593, Nanosensing: Materials and Devices, 1 (December 29, 2004); doi:10.1117/12.571410
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From Conference Volume 5593

  • Nanosensing: Materials and Devices
  • M. Saif Islam; Achyut K. Dutta
  • Philadelphia, PA | October 25, 2004

abstract

We have used a number of methods to grow long aligned single-walled carbon nanotubes. Geometries include individual long tubes, dense parallel arrays, and long freely suspended nanotubes. We have fabricated a variety of devices for applications such as multiprobe resistance measurement and high-current field effect transistors. In addition, we have measured conductance of single-walled semiconducting carbon nanotubes in field-effect transistor geometry and investigated the device response to water and alcoholic vapors. We observe significant changes in FET drain current when the device is exposed to various kinds of different solvent. These responses are reversible and reproducible over many cycles of vapor exposure. Our experiments demonstrate that carbon nanotube FETs are sensitive to a wide range of solvent vapors at concentrations in the ppm range.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

James Hone ; Philip Kim ; X. M. H. Huang ; B. Chandra ; R. Caldwell, et al.
"Growth of nanotubes and chemical sensor applications", Proc. SPIE 5593, Nanosensing: Materials and Devices, 1 (December 29, 2004); doi:10.1117/12.571410; http://dx.doi.org/10.1117/12.571410


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