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Position Control and Electrical Characterization of Single-Walled Carbon Nanotubes Debundled by Density Gradient Ultracentrifugation

Source: Jpn. J. Appl. Phys. 49, 02BD04 (2010); doi:10.1143/JJAP.49.02BD04

Issue Date: 8 March 2010

PUBLICATION DATA
ISSN:
1553-9644 (online)
Publisher:
AIP is a member of CrossRef JSAP
Katsuhiro Kaneko
Department of Electronic Science and Engineering, Kyoto University Katsura, Nishikyo, Kyoto 615-8510, Japan

Yuji Miyato
Department of Electronic Science and Engineering, Kyoto University Katsura, Nishikyo, Kyoto 615-8510, Japan

Kei Kobayashi
Innovative Collaboration Center, Kyoto University Katsura, Nishikyo, Kyoto 615-8520, Japan

Kazumi Matsushige
Department of Electronic Science and Engineering, Kyoto University Katsura, Nishikyo, Kyoto 615-8510, Japan

Hirofumi Yamada
Department of Electronic Science and Engineering, Kyoto University Katsura, Nishikyo, Kyoto 615-8510, Japan
We fabricated field-effect transistors of isolated single-walled carbon nanotubes (SWNTs) that were debundled by density gradient ultracentrifugation (DGU). A solution of SWNTs in heavy water was mixed with iodixanol and then centrifuged. After DGU, the layer in which the SWNTs with a chirality of $(6,5)$ were enriched was extracted and diluted with ultrapure water. The debundled SWNTs were bridged by dielectrophoresis between pairs of Pd electrodes. We also characterized the electrical properties of the SWNTs. Some SWNTs showed semiconductor characteristics, whereas others showed metallic behavior. ©2010

(As supplied by publisher.)

Permalink: http://dx.doi.org/10.1143/JJAP.49.02BD04
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