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.
authors.affiliation: SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, KyungGi-Do, 440-746, Korea.
authors.forename: Seunghyun
authors.initials: S
authors.lastname: Hong
authors.forename: Sehun
authors.initials: S
authors.lastname: Jung
authors.forename: Sunjung
authors.initials: S
authors.lastname: Kang
authors.forename: Youngjin
authors.initials: Y
authors.lastname: Kim
authors.forename: Xinqi
authors.initials: X
authors.lastname: Chen
authors.forename: Sasha
authors.initials: S
authors.lastname: Stankovich
authors.forename: S Rodney
authors.initials: SR
authors.lastname: Ruoff
authors.forename: Seunghyun
authors.initials: S
authors.lastname: Baik