Transilient Response to Acetone Gas Using the Interlocking p+n Field-Effect Transistor Circuit
AbstractLow concentration acetone gas detection is significantly important for diabetes diagnosis as 1.8–10 ppm of acetone exists in exhaled breath from diabetes patients. A new interlocking p+n field-effect transistor (FET) circuit has been proposed for Mn-doped ZnO nanoparticles (MZO) to detect the acetone gas at low concentration, especially close to 1.8 ppm. It is noteworthy that MZO in this interlocking amplification circuit shows a low voltage signal of <0.3 V to the acetone <2 ppm while it displays a transilient response with voltage signal >4.0 V to >2 ppm acetone. In other words, the response to acetone from 1 ppm to 2 ppm increases by ~1233%, which is competent to separate diabetic patients from healthy people. Moreover, the response to 2 ppm acetone is hardly influenced by high relative humidity of 85%. In the meanwhile, MZO in this interlocking circuit possesses a high acetone selectivity compared to formaldehyde, acetaldehyde, toluene and ethanol, suggesting a promising technology for the widespread qualitative screening of diabetes. Importantly, this interlocking circuit is also applicable to other types of metal oxide semiconductor gas sensors. The resistance jump of p- and n-FETs induced by the change of their gate voltages is deemed to make this interlocking circuit produce the transilient response. View Full-Text
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Zhou, X.; Wang, J.; Wang, Z.; Bian, Y.; Wang, Y.; Han, N.; Chen, Y. Transilient Response to Acetone Gas Using the Interlocking p+n Field-Effect Transistor Circuit. Sensors 2018, 18, 1914.
Zhou X, Wang J, Wang Z, Bian Y, Wang Y, Han N, Chen Y. Transilient Response to Acetone Gas Using the Interlocking p+n Field-Effect Transistor Circuit. Sensors. 2018; 18(6):1914.Chicago/Turabian Style
Zhou, Xinyuan; Wang, Jinxiao; Wang, Zhou; Bian, Yuzhi; Wang, Ying; Han, Ning; Chen, Yunfa. 2018. "Transilient Response to Acetone Gas Using the Interlocking p+n Field-Effect Transistor Circuit." Sensors 18, no. 6: 1914.
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