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Controlling SWCNT assembling density by electrokinetics
Yu HB(于海波); Hermann, Sascha; Dong ZL(董再励); Mai, John; Li WJ(李文荣); Schulz, Stefan E.
作者部门机器人学研究室
关键词Assembly Dielectric Devices Electric Fields Electric Properties Electrodes Electrodynamics Electromagnetic Fields Electronic Properties Electroosmosis Electrophoresis Single-walled Carbon Nanotubes (Swcn)
发表期刊Sensors and Actuators, A: Physical
ISSN0924-4247
2013
卷号201页码:36-42
收录类别SCI ; EI
EI收录号20133116564118
WOS记录号WOS:000325836400004
产权排序1
摘要Single-walled carbon nanotubes (SWCNTs) as the colloid in a colloidal solution can be polarized in a non-uniform electric field and experience a net force that is the so-called dielectrophoresis (DEP) force, due to the interaction between the induced dipoles and the electric field. The positive DEP force can be usedto position and assemble arrays of SWCNTs. Inversely, the negative DEP force can be utilized to separate SWCNTs in terms of their electronic properties. Moreover, Joule heating generated by the electric field can lead to other electrokinetics forces in the colloidal solution, which give rise to fluidic motion of the solution. Additionally, at low frequencies, the electrical double layer also induces a steady fluidic motion, a phenomenon known as AC electroosmotic flow. These fluidic motion in turn exerts a drag force on thenanotubes. Hence, to controllably assemble SWCNTs using DEP force is a non-trivial task. In this article, the mechanisms of electrokinetics and electrohydrodynamics are systematically analyzed through numerical simulations for a set of parameters that are typically used for assembling SWCNTs between metalelectrodes. Finally, experimental results from the frequency-dependent assembly of SWCNTs using this set of parameters are described and discussed. These results show that the density of SWCNTs assembled between electrodes can be varied by controlling the electrokinetics parameters.

语种英语
WOS标题词Science & Technology ; Technology
WOS类目Engineering, Electrical & Electronic ; Instruments & Instrumentation
关键词[WOS]WALLED CARBON NANOTUBES ; DIELECTROPHORESIS ; MANIPULATION ; TRANSISTORS ; SEPARATION ; SOLVENT ; DEVICES ; FIELD
WOS研究方向Engineering ; Instruments & Instrumentation
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sia.cn/handle/173321/12551
专题机器人学研究室
通讯作者Li WJ(李文荣)
作者单位1.Key State Laboratory of Robotics, Shenyang Institute of Automation, CAS, Shenyang, China
2.Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Hong Kong, Hong Kong
3.Center for Microtechnologies (ZFM), Chemnitz University of Technology, Chemnitz, Germany
4.Department of Back-end of Line, Fraunhofer Institute for Electronic Nano Systems, Chemnitz, Germany
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GB/T 7714
Yu HB,Hermann, Sascha,Dong ZL,et al. Controlling SWCNT assembling density by electrokinetics[J]. Sensors and Actuators, A: Physical,2013,201:36-42.
APA Yu HB,Hermann, Sascha,Dong ZL,Mai, John,Li WJ,&Schulz, Stefan E..(2013).Controlling SWCNT assembling density by electrokinetics.Sensors and Actuators, A: Physical,201,36-42.
MLA Yu HB,et al."Controlling SWCNT assembling density by electrokinetics".Sensors and Actuators, A: Physical 201(2013):36-42.
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