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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    Special 1    September 2009

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Attaching single carbon nanotube on tip’s apex
 using dielectrophoresis of DC-pulse voltage
Hee-Jin JEONG1, Yoong-Ho JUNG2, Deug-Woo LEE3

1. Gyeongbuk Hybrid Technology Institute, Gyeongbuk, 770-170, Korea;
2. School of Mechanical Engineering, Pusan National University, Busan, 609-735, Korea;
3. Department of Nanosystem and Nanoprocess Engineering, Pusan National University, Busan, 609-735, Korea

Abstract:Single carbon nanotubes (CNTs) are candidates for a number of electronics and sensing applications, provided that single CNTs can be separated from a bundle of CNTs in suspension. Dielectrophoresis has recently been demonstrated as one route for the extraction of desired CNTs. However, previous methods using dielectrophoresis have found it difficult to extract single nanotubes from bundles of CNTs in solution. Here, we show that this restriction can be overcome by using pulsed DC voltage of an electric field, instead of regular AC and DC voltages.

 

Key words: carbon nanotubes; dielectrophoresis; COMSOL; pulsed DC

ISSN 1672-7029
CN 43-1423/U

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