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Electrothermal flow in dielectrophoresis of single-walled carbon nanotubes
KTH.
University of Tokyo, Tokyo, Japan.
University of Tokyo, Tokyo, Japan.
2007 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 76, no 4, 045419Article in journal (Refereed) Published
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Abstract [en]

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.

Place, publisher, year, edition, pages
2007. Vol. 76, no 4, 045419
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:sh:diva-30147DOI: 10.1103/PhysRevB.76.045419ISI: 000248540000113Scopus ID: 2-s2.0-34547111313OAI: oai:DiVA.org:sh-30147DiVA: diva2:938188
Available from: 2008-06-02 Created: 2016-06-01 Last updated: 2016-06-16Bibliographically approved

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