JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.5 P.368-373

High-efficiency technique based on dielectrophoresis for assembling metal, semiconductor, and polymer nanorods

Author(s): Heng Yuan, Kyu-jin Kim, Won-seok Kang, Byoung-ho Kang, Se-hyuk Yeom, Jae-ho Kim, Shin-won Kang
Affiliation(s): School of Electrical Engineering and Computer Science, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, Daegu 702-701, Korea; more
Corresponding email(s): swkang@knu.ac.kr
Key Words: Nanorod, Assembly, Dielectrophoresis (DEP), Finite element method (FEM), Electrochemical deposition (ECD) method

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Abstract: This paper presents a high-efficiency technique based on dielectrophoresis (DEP) for assembling metal, semiconductor, and polymer nanorods, which are synthesized by electrochemical deposition (ECD). The assembly patterns of these nanorods (width: 20 nm; length: 7 μm) were designed using a finite element method (FEM) simulation tool. Further, these nanorods were used in our experiment after their assembly patterns were fabricated. The assembly yield was found to be approximately 70% at an AC voltage of 30 V_p-p and at frequencies of 20 and 30 kHz, and the DC voltage prevented the random alignment of the nanorods at the edge of the assembly pattern. Moreover, the above-mentioned nanorods, which had different permittivities, were found to have similar assembly yields. The proposed method can be improved and applied to nanostructure device fabrication.

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