Effect of a square wave on an assembly of multi-walled carbon nanotubes using AC dielectrophoresis

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Here, we report an alignment and attachment of multi-walled carbon nanotubes (MWNTs) between microelectrodes using alternating current (AC) dielectrophoresis, where the AC dielectrophoresis is induced by a square wave rather than the conventional sinusoidal wave. A parametric study showed that square-wave-based AC dielectrophoresis is useful in alignment and attachment of MWNTS on a microelectrode gap, and that the square wave is effective in aligning the MWNTs in a low-frequency range (similar to 10 kHz) without addition of a direct current (DC) signal. Moreover, we could attach the MWNTs between microelectrodes with minimal amounts of impurities by adjusting the square-wave duty cycle. (C) 2009 Published by Elsevier B.V.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2009-06
Language
English
Article Type
Article
Keywords

FIELD-EFFECT TRANSISTORS; CURRENT ELECTRIC-FIELD; FABRICATION; MOBILITY

Citation

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, v.41, no.7, pp.1137 - 1142

ISSN
1386-9477
DOI
10.1016/j.physe.2008.12.007
URI
http://hdl.handle.net/10203/96876
Appears in Collection
ME-Journal Papers(저널논문)
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