Electrical properties of CNx nanotubes probed in a transmission electron microscope

P. M.F.J. Costa*, D. Golberg, M. Mitome, Y. Bando

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Knowledge of the mechanical and electrical characteristics of one-dimensional nanostructures is critical for their future integration in nanoelectronic circuits. The present study analyses the behaviour of N-doped carbon nanotubes (CNx,x<0.1) under applied stresses inside a transmission electron microscope. The electrical resistance changes observed were substantial, with figures ranging from 42 to 182 k∈Ω, and are largely correlated with the extension of the contact area (electrode-nanotube or nanotube-nanotube). Despite the repeated deformation cycles and high bending angles achieved, the nanotubes kept their metallic nature throughout. In addition to this, it was noticed that the CNx nanotubes presented sections with several structural defects which acted as joints during their controlled bending. These areas represent high-resistive points which may lead to fatal structural failure, as demonstrated in the current induced failure experiments here reported.

Original languageEnglish (US)
Pages (from-to)225-229
Number of pages5
JournalApplied Physics A: Materials Science and Processing
Issue number2
StatePublished - Feb 2008
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science


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