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

Hyung Cheoul Shim; Yoon Keun Kwak; Chang Soo Han; Soohyun Kim

doi:10.1016/j.physe.2008.12.007

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

Hyung Cheoul Shim, Yoon Keun Kwak, Chang Soo Han, Soohyun Kim

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1137-1142
Number of pages	6
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	41
Issue number	7
DOIs	https://doi.org/10.1016/j.physe.2008.12.007
Publication status	Published - 2009 Jun
Externally published	Yes

Bibliographical note

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.

Keywords

Dielectrophoresis
Multi-walled carbon nanotubes (MWNTs)
Square wave

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/j.physe.2008.12.007

Cite this

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

abstract = "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.",

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note = "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.",

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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

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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.

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KW - Square wave

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

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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