Nonionic electrophoretic sorting of SWCNTs into metallic and semiconducting tubes

Kiley A. Johns, Katie J. Koontz, Danhao Ma, Kathryn J. Carruba, Kofi W. Adu

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We present our preliminary results on a novel technique to electrophoretically sort single- wall carbon nanotubes into metallic and semiconducting tubes using a free-solution nonionic surfactant in a homemade electrophoretic vertical cell. The technique is used to sort purified commercial product SWCNTs, (Thomas Swan Elicarb) into metallic and semiconducting tubes. In contrast to conventional electrophoresis techniques, which takes more than 24 hours to obtain efficient separation, our approach takes ∼ 6 hours to achieve efficient separation, which reduces the separation time by four fold. Characterization of the sorted tubes with micro-Raman spectroscopy analysis shows very strong enrichment of both metallic and semiconducting tubes.

Original languageEnglish (US)
Title of host publicationCarbon Nanomaterials
PublisherMaterials Research Society
Number of pages5
ISBN (Print)9781632660985
StatePublished - Jan 1 2013
Event2012 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 25 2012Nov 30 2012

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Other2012 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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