TY - JOUR
T1 - Effect of a square wave on an assembly of multi-walled carbon nanotubes using AC dielectrophoresis
AU - Shim, Hyung Cheoul
AU - Kwak, Yoon Keun
AU - Han, Chang Soo
AU - Kim, Soohyun
N1 - Funding Information:
We acknowledge the financial support from the Center for Nanoscale Mechatronics & Manufacturing of the 21C Frontier Research Program. And this work was also partially supported by the second stage of the Brain Korea 21 Project in 2008.
Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2009/6
Y1 - 2009/6
N2 - 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 (∼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.
AB - 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 (∼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.
KW - Dielectrophoresis
KW - Multi-walled carbon nanotubes (MWNTs)
KW - Square wave
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U2 - 10.1016/j.physe.2008.12.007
DO - 10.1016/j.physe.2008.12.007
M3 - Article
AN - SCOPUS:67349216913
SN - 1386-9477
VL - 41
SP - 1137
EP - 1142
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
IS - 7
ER -