Dielectrophoresis assembly of multiwall carbon nanotubes for creating cylindrical clusters

Author

Lan, Yi-Chung ; Yang, Yao-Joe

Author_Institution

Dept. of Mech. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

2011

fDate

20-23 Feb. 2011

Firstpage

817

Lastpage

820

Abstract

In this work, we propose a method of assembling carbon nanotubes (CNT) into a cluster by using dielectrophoresis. Multiwall carbon nanotubes (MWCNTs), which have been acid-treated, are dispersed into ethanol solution at a concentration of approximate 500 μg/mL. Then, the MWCNT solution is transported between a micromachined bottom electrode and a top probe electrode. A MWCNT cluster is formed using dielectrophoresis assisted by the surface tension during the solution evaporation process. The repeated experiment shows that measured electrical resistance of the assembled MWCNTs cluster is about 40 ohm.

Keywords

carbon nanotubes; disperse systems; electrical resistivity; electrochemical electrodes; electrophoresis; evaporation; micromachining; nanofabrication; self-assembly; surface tension; C; acid treatment; cylindrical clusters; dielectrophoresis assembly; dispersions; electrical resistivity; ethanol solution; evaporation; micromachined electrode; multiwall carbon nanotubes; surface tension; top probe electrode; Carbon nanotubes; Dielectrophoresis; Electric fields; Electrodes; Force; Probes; Resistance; Carbon Nanotube based; Devices and Systems; Micro and Nano Fabrication; Nanomaterials;

fLanguage

English

Publisher

ieee

Conference_Titel

Nano/Micro Engineered and Molecular Systems (NEMS), 2011 IEEE International Conference on

Conference_Location

Kaohsiung

Print_ISBN

978-1-61284-775-7

Type

conf

DOI

10.1109/NEMS.2011.6017479

Filename

6017479