The effect of deformation on room temperature Coulomb blockade using conductive carbon nanotubes

Benjamin Legum, Ryan Cooper, Davide Mattia, Yury Gogotsi, E Layton Bradley

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We report fluctuations in resistivity and the manifestation of Coulomb blockade phenomena of conductive multiwalled carbon nanotubes under buckling loads. Individual nanotubes were suspended and soldered between two indium-dipped tungsten probe tips. Using the electrical connection between the probes and the nanotube, electrical measurements were taken with the tube straight (unstrained) and bent (strained). Typical resistances were in the 10 G Omega range with resistivities in the 15 to 30 Omega-m range within the Coulomb blockade region of -1.0 to -0.4 V. Coulomb blockade, or electron tunneling events, appeared to occur at one of the contact points. This effect was diminished or lost once the carbon weld was broken.
Original languageEnglish
Pages (from-to)4206-10
Number of pages5
JournalEngineering in Medicine and Biology Society (29th Annual International Conference of the IEEE)
Volume2007
Publication statusPublished - 2007

Fingerprint

Coulomb blockade
Nanotubes
Carbon Nanotubes
Carbon nanotubes
Indium
Tungsten
Temperature
Electron tunneling
Carbon
Multiwalled carbon nanotubes (MWCN)
Point contacts
Electrons
Buckling
Welds

Keywords

  • 0 (Nanotubes
  • *Electric Conductivity
  • Mechanical
  • Carbon
  • Carbon)
  • Stress
  • *Nanotubes
  • Weight-Bearing

Cite this

The effect of deformation on room temperature Coulomb blockade using conductive carbon nanotubes. / Legum, Benjamin; Cooper, Ryan; Mattia, Davide; Gogotsi, Yury; Layton Bradley, E.

In: Engineering in Medicine and Biology Society (29th Annual International Conference of the IEEE), Vol. 2007, 2007, p. 4206-10.

Research output: Contribution to journalArticle

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AB - We report fluctuations in resistivity and the manifestation of Coulomb blockade phenomena of conductive multiwalled carbon nanotubes under buckling loads. Individual nanotubes were suspended and soldered between two indium-dipped tungsten probe tips. Using the electrical connection between the probes and the nanotube, electrical measurements were taken with the tube straight (unstrained) and bent (strained). Typical resistances were in the 10 G Omega range with resistivities in the 15 to 30 Omega-m range within the Coulomb blockade region of -1.0 to -0.4 V. Coulomb blockade, or electron tunneling events, appeared to occur at one of the contact points. This effect was diminished or lost once the carbon weld was broken.

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