Electrothermal flow in dielectrophoresis of single-walled carbon nanotubes
- 19 July 2007
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 76 (4), 045419
- https://doi.org/10.1103/physrevb.76.045419
Abstract
We theoretically investigate the impact of the electrothermal flow on the dielectrophoretic separation of single-walled carbon nanotubes (SWNTs). The electrothermal flow is observed to control the motions of semiconducting SWNTs in a sizable domain near the electrodes under typical experimental conditions, therefore helping the dielectrophoretic force to attract semiconducting SWNTs in a broader range. Moreover, with the increase of the surfactant concentration, the electrothermal flow effect is enhanced, and with the change of frequency, the pattern of the electrothermal flow changes. It is shown that under some typical experimental conditions of dielectrophoretic separation of SWNTs, the electrothermal flow is a dominating factor in determining the motion of SWNTs.Keywords
Other Versions
This publication has 16 references indexed in Scilit:
- Dielectrophoresis of Surface Conductance Modulated Single-Walled Carbon Nanotubes Using Catanionic SurfactantsThe Journal of Physical Chemistry B, 2006
- Large-Scale Separation of Metallic and Semiconducting Single-Walled Carbon NanotubesJournal of the American Chemical Society, 2005
- Using the Selective Functionalization of Metallic Single-Walled Carbon Nanotubes to Control Dielectrophoretic MobilityThe Journal of Physical Chemistry B, 2004
- Numerical simulation of travelling wave induced electrothermal fluid flowJournal of Physics D: Applied Physics, 2004
- Dielectrophoresis of carbon nanotubes using microelectrodes: a numerical studyNanotechnology, 2004
- Structure-Based Carbon Nanotube Sorting by Sequence-Dependent DNA AssemblyScience, 2003
- Bulk Separative Enrichment in Metallic or Semiconducting Single-Walled Carbon NanotubesNano Letters, 2003
- Separation of Metallic from Semiconducting Single-Walled Carbon NanotubesScience, 2003
- A Route for Bulk Separation of Semiconducting from Metallic Single-Wall Carbon NanotubesJournal of the American Chemical Society, 2003
- Carbon nanotubes: opportunities and challengesSurface Science, 2001