Dielectrophoretic deposition of graphite oxide soot particles

Seunghyun Hong; Sehun Jung; Sunjung Kang; Youngjin Kim; Xinqi Chen; Sasha Stankovich; S. Rodney Ruoff; Seunghyun Baik

doi:10.1166/jnn.2008.076

Dielectrophoretic deposition of graphite oxide soot particles

Seunghyun Hong, Sehun Jung, Sunjung Kang, Youngjin Kim, Xinqi Chen, Sasha Stankovich, S. Rodney Ruoff, Seunghyun Baik

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

28 Scopus citations

Abstract

Alternating current dielectrophoresis in water was used to position graphite oxide soot (GO-soot) particles generated by rapid thermal expansion of graphite oxide under inert gas. The dielectrophoretic deposition was carried out at a frequency of 10 MHz and a peak-to-peak voltage of 10 V, and the deposited particles were analyzed using scanning electron microscopy. The vertical cross section, obtained by focused ion beam cutting, shows the wrinkled layers of the GO-soot particles and cavities between the layers. The electrical transport measurements show typical characteristics of metal-like pathways. The improved electrical contact between electrodes and GO-soot, probably due to the thin platelet structure of GO-soot, makes the material favorable for electrical device applications. The results demonstrate that AC dielectrophoresis can be used to selectively deposit graphite oxide soot particles at desired locations.

Original language	British English
Pages (from-to)	424-427
Number of pages	4
Journal	Journal of Nanoscience and Nanotechnology
Volume	8
Issue number	1
DOIs	https://doi.org/10.1166/jnn.2008.076
State	Published - Jan 2008

Keywords

Dielectrophoresis
Electrical transport measurement
Graphite oxide soot
Positioning

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10.1166/jnn.2008.076

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title = "Dielectrophoretic deposition of graphite oxide soot particles",

abstract = "Alternating current dielectrophoresis in water was used to position graphite oxide soot (GO-soot) particles generated by rapid thermal expansion of graphite oxide under inert gas. The dielectrophoretic deposition was carried out at a frequency of 10 MHz and a peak-to-peak voltage of 10 V, and the deposited particles were analyzed using scanning electron microscopy. The vertical cross section, obtained by focused ion beam cutting, shows the wrinkled layers of the GO-soot particles and cavities between the layers. The electrical transport measurements show typical characteristics of metal-like pathways. The improved electrical contact between electrodes and GO-soot, probably due to the thin platelet structure of GO-soot, makes the material favorable for electrical device applications. The results demonstrate that AC dielectrophoresis can be used to selectively deposit graphite oxide soot particles at desired locations.",

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T1 - Dielectrophoretic deposition of graphite oxide soot particles

AU - Hong, Seunghyun

AU - Jung, Sehun

AU - Kang, Sunjung

AU - Kim, Youngjin

AU - Chen, Xinqi

AU - Stankovich, Sasha

AU - Ruoff, S. Rodney

AU - Baik, Seunghyun

PY - 2008/1

Y1 - 2008/1

N2 - Alternating current dielectrophoresis in water was used to position graphite oxide soot (GO-soot) particles generated by rapid thermal expansion of graphite oxide under inert gas. The dielectrophoretic deposition was carried out at a frequency of 10 MHz and a peak-to-peak voltage of 10 V, and the deposited particles were analyzed using scanning electron microscopy. The vertical cross section, obtained by focused ion beam cutting, shows the wrinkled layers of the GO-soot particles and cavities between the layers. The electrical transport measurements show typical characteristics of metal-like pathways. The improved electrical contact between electrodes and GO-soot, probably due to the thin platelet structure of GO-soot, makes the material favorable for electrical device applications. The results demonstrate that AC dielectrophoresis can be used to selectively deposit graphite oxide soot particles at desired locations.

AB - Alternating current dielectrophoresis in water was used to position graphite oxide soot (GO-soot) particles generated by rapid thermal expansion of graphite oxide under inert gas. The dielectrophoretic deposition was carried out at a frequency of 10 MHz and a peak-to-peak voltage of 10 V, and the deposited particles were analyzed using scanning electron microscopy. The vertical cross section, obtained by focused ion beam cutting, shows the wrinkled layers of the GO-soot particles and cavities between the layers. The electrical transport measurements show typical characteristics of metal-like pathways. The improved electrical contact between electrodes and GO-soot, probably due to the thin platelet structure of GO-soot, makes the material favorable for electrical device applications. The results demonstrate that AC dielectrophoresis can be used to selectively deposit graphite oxide soot particles at desired locations.

KW - Dielectrophoresis

KW - Electrical transport measurement

KW - Graphite oxide soot

KW - Positioning

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EP - 427

JO - Journal of Nanoscience and Nanotechnology

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Dielectrophoretic deposition of graphite oxide soot particles

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Keywords

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