We present an approach to use individual nanowire transistors as chemical sensors working at room temperature. Upon exposure to a small amount of or the nanowire transistors showed a decrease in conductance up to six or five orders of magnitude and also substantial shifts in the threshold gate voltage. These devices exhibited significantly improved chemical sensing performance compared to existing solid-state sensors in many aspects, such as the sensitivity, the selectivity, the response time, and the lowest detectable concentrations. Furthermore, the recovery time of our devices can be shortened to just 30 s by illuminating the devices with UV light in vacuum.
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Research Article| March 04 2003
nanowires as chemical sensors
Chao Li, Daihua Zhang, Xiaolei Liu, Song Han, Tao Tang, Jie Han, Chongwu Zhou; nanowires as chemical sensors. Appl. Phys. Lett. 10 March 2003; 82 (10): 1613–1615. https://doi.org/10.1063/1.1559438
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