| Title | Low-cost gas sensors utilizing mm-wave radars |
| Publication Type | Conference Paper |
| Year of Publication | 2017 |
| Authors | Liu, S., G. Shaker, S. Safavi-Naeini, and M. J Chong |
| Conference Name | 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting |
| Date Published | 07/2017 |
| Publisher | IEEE |
| Abstract | Carbon nanotube (CNT) gas sensors have been the subject of extensive research due to their electrical sensitivity to small quantities of gases. In this work, we demonstrate a novel concept system of a low-cost gas sensor utilizing a compact millimeter-wave radar operating at 60 GHz. Characterization of the mm-wave properties of CNTs on paper substrates is performed. When exposed to gas, significant changes in the magnitude of the backscattered signals from the CNT paper sensor can be observed. A compact mm-wave radar was used to interrogate the passive sensors and detect the changes in the backscattered signals, enabling real-time gas monitoring. Compared to prior art utilizing RF technologies, this new mm-wave enabled system promises to be of a much higher sensitivity with the potential of being realized at a much lower cost. |
| URL | https://ieeexplore.ieee.org/abstract/document/8072969 |
