Title :
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
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;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems (NEMS), 2011 IEEE International Conference on
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-61284-775-7
DOI :
10.1109/NEMS.2011.6017479
