Dragoman, Mircea and Grenier, Katia and Dubuc, David and Bary, Laurent and Plana, Robert and Fourn, Erwan and Flahaut, Emmanuel Millimeter wave carbon nanotube gas sensor. (2007) Journal of Applied Physics, vol. 101 . p. 106103. ISSN 0021-8979
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Official URL: http://dx.doi.org/10.1063/1.2734873
This Letter reports experimental observations regarding the significant changes in the transmission modulus and phase of the propagating microwave signals up to 110 GHz in a micromachined coplanar waveguide supported on a dielectric membrane with a thickness of 1.4 m filled with a mixture of carbon nanotubes when exposed to nitrogen gas. These large shifts of amplitude and phase of microwave signals due to gas absorption represent the experimental basis on which a miniature wireless gas sensor could be implemented.
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