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Proceedings Paper

Growth of nanotubes and chemical sensor applications
Author(s): 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 Peter Nuckolls
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Paper 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.

Paper Details

Date Published: 29 December 2004
PDF: 12 pages
Proc. SPIE 5593, Nanosensing: Materials and Devices, (29 December 2004); doi: 10.1117/12.571410
Show Author Affiliations
James Hone, Columbia Univ. (United States)
Philip Kim, Columbia Univ. (United States)
X. M. H. Huang, Columbia Univ. (United States)
B. Chandra, Columbia Univ. (United States)
R. Caldwell, Columbia Univ. (United States)
J. Small, Columbia Univ. (United States)
B. H. Hong, Columbia Univ. (United States)
T. Someya, Columbia Univ. (United States)
L. Huang, Columbia Univ. (United States)
S. O'Brien, Columbia Univ. (United States)
Colin Peter Nuckolls, Columbia Univ. (United States)

Published in SPIE Proceedings Vol. 5593:
Nanosensing: Materials and Devices
M. Saif Islam; Achyut K. Dutta, Editor(s)

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