Nearly single-chirality single-walled carbon nanotubes produced via orthogonal iterative density gradient ultracentrifugation

Alexander A. Green, Mark C. Hersam

Research output: Contribution to journalArticle

139 Scopus citations


We describe how iterative, orthogonal density gradient ultracentrifugation (DGU) separations can be used to produce nearly single-chirality (6,5) SWNTs. SWNT network transistors made from these highly pure, 98% semiconducting SWNTs simultaneously exhibit high on/off ratios, mobilities, and on-state conductances, suggesting their future application in integrated circuits and near-infrared optoelectronic light emitters and photodetectors.

Original languageEnglish (US)
Pages (from-to)2185-2190
Number of pages6
JournalAdvanced Materials
Issue number19
StatePublished - May 17 2011
Externally publishedYes



  • carbon nanotubes
  • density gradient ultracentrifugation
  • purification
  • separation
  • transistors

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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