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IJAT Vol.12 No.1 pp. 29-36
doi: 10.20965/ijat.2018.p0029
(2018)

Paper:

High-Yield Bridged Assembly of ssDNA-Modified SWCNT Using Dielectrophoresis

Yusuke Shiomi, Yoshikazu Hirai, Osamu Tabata, and Toshiyuki Tsuchiya

Department of Micro Engineering, Kyoto University
Nishikyo-ku, Kyoto 615-8540, Japan

Corresponding author

Received:
June 1, 2017
Accepted:
November 16, 2017
Published:
January 5, 2018
Keywords:
single-walled carbon nanotube (SWCNT), single strand DNA modification, dielectrophoresis, electroless gold deposition, back-gate type field effect transistor (FET)
Abstract

A high-yield, bridged assembly of single-walled carbon nanotubes (SWCNT) was demonstrated using single-strand DNA (ssDNA) modification, dielectrophoresis (DEP), and electroless deposition of gold. ssDNA modification is used for the mono-dispersion of an SWCNT solution for DEP. Gold deposition after DEP was used for the electrical and mechanical clamping of assembled SWCNTs. DEP conditions were investigated, and the best conditions, namely, 2 Vpp, 1 kHz, 1 min for 200-nm gap electrodes, resulted in 8 single-assembly and 19 multiple-assembly SWCNTs between 33 pairs of electrode gaps. The electrical properties of the assembled ssDNA-modified SWCNTs were measured as a back-gate type of FET, and both metallic and semiconducting properties were observed.

Cite this article as:
Y. Shiomi, Y. Hirai, O. Tabata, and T. Tsuchiya, “High-Yield Bridged Assembly of ssDNA-Modified SWCNT Using Dielectrophoresis,” Int. J. Automation Technol., Vol.12, No.1, pp. 29-36, 2018.
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Last updated on Dec. 13, 2018