Experimental determination of microwave attenuation and electrical permittivity of double-walled carbon nanotubes

M. Dragoman, K. Grenier, D. Dubuc, L. Bary, E. Fourn, R. Plana, E. Flahaut
2006 Applied Physics Letters  
The attenuation and the electrical permittivity of the double-walled carbon nanotubes (DWCNTs) were determined in the frequency range of 1-65 GHz. A micromachined coplanar waveguide transmission line supported on a Si membrane with a thickness of 1.4 µm was filled with a mixture of DWCNTs. The propagation constants were then determined from the S parameter measurements. The DWCNTs mixture behaves like a dielectric in the range of 1-65 GHz with moderate losses and an abrupt change of the
more » ... e permittivity that is very useful for gas sensor detection.
doi:10.1063/1.2193464 fatcat:ryv63fg3a5dw5a2rcmc6ychmmi