Fabrication and characterisation of suspended carbon nanotube devices in liquid

Alexander B. Artyukhin, Michael Stadermann, Pieter Stroeve, Olgica Bakajin, Aleksandr Noy

Research output: Contribution to journalArticlepeer-review


Suspended carbon nanotube devices represent a promising platform for future bio-electronic applications. Suspended carbon nanotube transistors have been previously fabricated in air; however all previous attempts to bring them into liquid failed. We analyse forces acting on the suspended nanotube devices during immersion into liquids and during device operation and show that surface tension forces acting on the suspended nanotubes during transfer into the liquid phase are responsible for the nanotube damage. We have developed a new strategy that circumvents these limitations by coating suspended nanotubes with a rigid inorganic shell in the gas phase. The coating reinforces the nanotubes and allows them to survive transfer through the interface. Subsequent removal of the coating in the solution phase restores pristine suspended nanotubes. We demonstrate that devices fabricated using this technique preserve their original electrical characteristics.

Original languageEnglish (US)
Pages (from-to)488-496
Number of pages9
JournalInternational Journal of Nanotechnology
Issue number4-5
StatePublished - Mar 2008
Externally publishedYes


  • Carbon nanotube
  • Nanotube fabrication
  • Nanotube transistors
  • Operation in fluid
  • Suspended nanotubes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Materials Science (miscellaneous)
  • Control and Systems Engineering


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