基于带隙调幅调制的识别灵敏度为-9.32 d B;而基于带隙调频调制的识别灵敏度为-11.30 d B。
Abstract
Aiming at detection of concentration of methane at room temperature
a sensor in ultra-wideband radio frequency identification( UWB-RFID) is proposed based on Pd-doped single walled carbon nanotubes( PdSWCNTs). The proposed sensor is a thinly filmed tag composed of a sensor probe and an EM interface
sensor probe is an inter-digital electrode( IDE) that takes the Pd-SWCNTs as load; The EM interface is composed of an antenna
a microstrip line and a terminal load. When the Pd-SWCNTs senses concentration of methane
the current of IDE will be changed
form two detection modes which are band-gap amplitude modulation and band-gap frequency modulation. When concentration of methane from 0 × 10- 6to 100 × 10- 6
the identifiable sensitivity in terms of the band-gap amplitude modulation is- 9. 32 d B; while the identifiable sensitivity in terms of the bandgap frequency modulation is- 11. 30 d B.
关键词
Keywords
references
Nanomaterials for gas sensing: a review of recent research [J] . Robert Bogue. Sensor Review . 2014 (1)
A novel methane sensor based on porous SnO2 nanorods: room temperature to high temperature detection [J] . A Biaggi-Labiosa,F Solá,M Lebrón-Colón,L J Evans,J C Xu,GW Hunter,G M Berger,J M González. Nanotechnology . 2012 (45)
Methane sensor based on nanocomposite of palladium/multi-walled carbon nanotubes grafted with 1,6-hexanediamine [J] . Zhongping Li,Junfen Li,Xu Wu,Shaomin Shuang,Chuan Dong,Martin M.F. Choi. Sensors & Actuators: B. Chemical . 2009 (2)
Room temperature methane detection using palladium loaded single-walled carbon nanotube sensors [J] . Yijiang Lu,Jing Li,Jie Han,H.-T. Ng,Christie Binder,Christina Partridge,M. Meyyappan. Chemical Physics Letters . 2004 (4)