Dependence of AC electrophoresis carbon nanotube manipulation on microelectrode geometry

Victor T.S. Wong, Wen J. Li

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16 Scopus citations


A rapid approach to form post-growth multi-walled carbon nanotube (MWNT) linkages between microelectrodes using AC electrophoresis is presented. Three types of microelectrodes with different geometrical shapes were fabricated to investigate the degree of MWNT linkages formation. The gap distance between the microelectrode pairs ranged from 10 μm to 30 μm. We experimentally observed that in 0.02 mg/ml MWNT-ethanol medium, MWNT with axial dimension ranging from 1 μm to 10 μm can bridge microelectrode pairs with gap distance smaller than 15 μm in applied sinusoidal AC frequency ranging from 100 Hz to 1 MHz and the electric field strength ranging from 0.3 V / μm to 0.7 V / μm. This is a very fast and inexpensive approach to manipulate MWNT to any specific area of a patterned substrate using AC voltage source.

Original languageEnglish (US)
Pages (from-to)769-774
Number of pages6
JournalInternational Journal of Nonlinear Sciences and Numerical Simulation
Issue number3-4
StatePublished - 2002

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Computational Mechanics
  • Modeling and Simulation
  • Engineering (miscellaneous)
  • Mechanics of Materials
  • General Physics and Astronomy
  • Applied Mathematics


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