Title :
A novel ultrasensitive gas detector system based on carbon nanotube mixtures and antenna radiation variation
Author :
Thai, Trang T. ; Haque, Amil ; DeJean, Gerald R. ; Tentzeris, Manos M.
Author_Institution :
Sch. of ECE, Georgia Inst. of Technol., Atlanta, GA
Abstract :
A highly sensitive remote-sensing detector based on a mixture of double-walled carbon nanotubes has been designed to selectively detect different gases. The sensor consists of an antenna and a gas sensitive transmission line, operating at 60 GHz. The detection principle is based on different shifts of amplitude and phase of the antenna-feeding signal due to the presence of different gases, resulting in the change of the polarization and radiation pattern of the sensor antenna.
Keywords :
antenna feeds; antenna radiation patterns; carbon nanotubes; gas sensors; polarisation; antenna radiation variation; antenna-feeding signal; carbon nanotube; gas sensitive transmission line; polarization pattern; radiation pattern; sensor antenna; ultrasensitive gas detector system; Carbon nanotubes; Coplanar waveguides; Gas detectors; Gases; Permittivity; Power transmission lines; Radiation detectors; Remote monitoring; Sensor systems; Transmission line antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619244
