Electric-field-induced accumulation and alignment of carbon nanotubes

Author

Liu, X. ; Spencer, J.L. ; Kaiser, A.B. ; Arnold, W.M.

Author_Institution

Victoria Univ., Wellington, New Zealand

fYear

2002

fDate

2002

Firstpage

31

Lastpage

34

Abstract

Multi-walled carbon nanotubes were grown by chemical vapor deposition. It was found that, following suspension of the nanotubes in a solvent, they could be accumulated and aligned by an inhomogeneous radio-frequency electric field in the high-field regions of an interdigitated electrode structure. Increasing capacitance and conductance of the structure, which were monitored by dielectric spectroscopy, correlated with onset and densification of microscopically visible accumulations of aligned tubes on the electrodes. Sudden and drastic increases in conductance ("bridging") were observed in some cases.

Keywords

capacitance; carbon nanotubes; dielectric measurement; electric admittance; electric field effects; electrophoresis; C; CVD grown nanotubes; chemical vapor deposition; dielectric spectroscopy; electric-field-induced accumulation; electric-field-induced alignment; high-field regions; inhomogeneous RF electric field; interdigitated electrode structure; multi-walled C nanotubes; nanotube suspension; nanotube synthesis; radiofrequency electric field; structure capacitance; structure conductance; Capacitance; Carbon nanotubes; Chemical vapor deposition; Dielectrics; Electrochemical impedance spectroscopy; Electrodes; Monitoring; Nonuniform electric fields; Radio frequency; Solvents;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2002 Annual Report Conference on

Print_ISBN

0-7803-7502-5

Type

conf

DOI

10.1109/CEIDP.2002.1048729

Filename

1048729