HF/Microwave Impedance of Carbon Nanotube Films

Author

Liu, X. ; Ellis, A.V. ; Arnold, W.M.

Author_Institution

Ind. Res. Ltd., Lower Hutt

fYear

2006

fDate

15-18 Oct. 2006

Firstpage

89

Lastpage

92

Abstract

The strength and conductivity of carbon nanotubes make them attractive materials for incorporation into composite materials for use in electrically lossy structures. Applications could include light-weight structures that are absorptive of radio and microwave signals. We have derivatised multi-walled nanotubes by acid treatment, formed them into layers on resistor-like chips, and then subjected these to dielectric characterization between 200 Hz and 1.8 GHz. Especially in the case of thicker layers, a highly-frequency-dependent behavior was observed. This was reduced when the electrode contacts were improved.

Keywords

absorbing media; carbon nanotubes; electrical conductivity; electrodes; electromagnetic wave absorption; lightweight structures; mechanical strength; 2E2 to 1.8E9 Hz; HF impedance; acid treatment; carbon nanotube film; composite materials; dielectric characterization; electrical conductivity; electrically lossy structure; electrode contacts; light-weight structure; mechanical strength; microwave impedance; multiwalled nanotubes; resistor-like chips; Carbon nanotubes; Composite materials; Conducting materials; Conductivity; Dielectric materials; Hafnium; Impedance; Lightweight structures; Nanocomposites; Organic materials;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2006 IEEE Conference on

Conference_Location

Kansas City, MO

Print_ISBN

1-4244-0547-5

Electronic_ISBN

1-4244-0547-5

Type

conf

DOI

10.1109/CEIDP.2006.312068

Filename

4105376