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Dielectrophoretic assembly of 2 nm gold particles for nano-sensing applications
Li ML(李明林); Leung, Siu Ling; Qu YL(曲艳丽); Dong ZL(董再励); Li WJ(李文荣)
Department机器人学研究室
Conference Name5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010
Conference DateJanuary 20-23, 2010
Conference PlaceXiamen, China
Source Publication2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010
PublisherIEEE Computer Society
Publication PlacePiscataway, NJ, USA
2010
Pages932-936
Indexed ByEI
EI Accession number20104813421293
Contribution Rank1
ISBN978-1-4244-6543-9
KeywordDielectrophoresis Gold Nanoparticles Nanodevices Nanoassembly
Abstract

This paper describes the assembly of 2 nm gold nanoparticles between micro-fabricated planar electrodes by using dielectrophoresis (DEP). The optimal conditions for effectively dieletrophoretic manipulation have been established through theoretical analysis and experimental validation. In the theoretical analysis, the effect of Brownian motion was taken into consideration, as well as the electrothermal flow and the AC electroosmosis flow. For effective manipulation of nanoparticles using DEP, proper high electric field strength is desired to give rise to dominate DEP effect, since the higher electric field strength increases the Joule heating and the lower strength reduces the DEP force. The current results indicate that the input voltage of 16Vp-p, 150 kHz leads to effective assembly of 2 nm gold nanoparticles. Our study proved that the DEP is capable of consistently assembling gold nanoparticles down to 2 nm in diameter with micro-fabricated electrodes, which was thought to be extremely difficult in the past.

Language英语
Document Type会议论文
Identifierhttp://ir.sia.cn/handle/173321/20062
Collection机器人学研究室
Corresponding AuthorLi WJ(李文荣)
Affiliation1.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, China
2.College of Mechanical Engineering, Fuzhou University, China
3.Graduate University, Chinese Academy of Sciences, China
4.University of Arizona, United States
5.Chinese University of Hong Kong, Hong Kong
Recommended Citation
GB/T 7714
Li ML,Leung, Siu Ling,Qu YL,et al. Dielectrophoretic assembly of 2 nm gold particles for nano-sensing applications[C]. Piscataway, NJ, USA:IEEE Computer Society,2010:932-936.
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