Dielectrophoretic separation of metallic arc-discharge single-walled carbon nanotubes in a microfluidic channel

Hosung Kang, Beibei Wang, Seunghyun Hong, Jung Jun Bae, Duckjong Kim, Chang Soo Han, Young Hee Lee, Seunghyun Baik

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Electronic type-dependent separation of single-walled carbon nanotubes (SWNTs), preserving pristine crystallinity and length, is of great interest since mixtures of semiconducting and metallic species are produced by current synthesis methods. Here we separated highly-enriched metallic SWNTs, synthesized by the arc-discharge method, by dielectrophoresis in a microfluidic channel. The design of microelectrodes was optimized to prevent the nanotube deposition on the electrodes for prolonged operation of the microfluidic chip. The average length of separated highly crystalline metallic SWNTs was relatively long (2-2.4 μm).

Original languageEnglish
Pages (from-to)23-28
Number of pages6
JournalSynthetic Metals
Volume184
DOIs
Publication statusPublished - 2013

Keywords

  • Arc-discharge generated single-walled carbon nanotubes
  • Dielectrophoretic separation
  • Microfluidic channel

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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