Paper Title:
Study on Piezoresistive of Doped Carbon Nanotube Films
  Abstract

The piezoresistive effect in iodine-doped carbon nanotube films was investigated by a three-point bending test. Carbon nanotubes were synthesized by hot filament chemical vapor deposition. The experimental results showed that the gauge factor for I-doped and undoped carbon nanotube films under 500 microstrain was about 350 and 65 respectively at room temperature, exceeding that of polycrystalline silicon (30) at 35°C. The origin of the piezoresistivity in the films may be ascribed to a strain-induced change in the band gap for the doped tubes and the intertube contact resistance and defects for the undoped tubes.

  Info
Edited by
M. Gupta and Christina Y.H. Lim
Pages
309-312
DOI
10.4028/www.scientific.net/JMNM.23.309
Citation
W.L. Wang, K.J. Liao, C. Cai, C.G. Hu, Y. Ma, J.W. Lu, "Study on Piezoresistive of Doped Carbon Nanotube Films", Journal of Metastable and Nanocrystalline Materials, Vol. 23, pp. 309-312, 2005
Online since
January 2005
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