Journal
SYNTHETIC METALS
Volume 184, Issue -, Pages 23-28Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2013.09.024
Keywords
Dielectrophoretic separation; Arc-discharge generated single-walled carbon nanotubes; Microfluidic channel
Funding
- National Research Foundation of Korea (NRF) [2012-R1A2A2A01013312]
- Korea government (MSIP)
- Research Centre Program of IBS (Institute for Basic Science)
- Human Resources Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) [20124010203270]
- Korea government Ministry of Trade, Industry and Energy
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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 mu m). (C) 2013 Elsevier B.V. All rights reserved.
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