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- W3157083799 abstract "Abstract In this paper, we study the influence of two key factors, temperature, and humidity, on gas sensors based on titanium dioxide nanowires synthesized at 4 different temperatures and with different morphology. The samples’ structure are investigated using SEM, XRD and FTIR analysis. The effects of humidity and temperature are studied by measuring the resistance and gas response when exposed to ethanol. At room temperature, we observed a 15% sensitivity response to 100 ppm of ethanol vapor and by increasing the operating temperature up to 180 °C, the response is enhanced by two orders of magnitude. The best operating temperature for the highest gas response is found to be around 180 °C. Also, it was observed that every nanowire morphology has its own optimum operating temperature. The resistance of sensors is increased at higher Relative Humidity (RH). Besides, the response to ethanol vapor experiences a gradual increase when the RH rises from 10% to 60%. On the other hand, from 60% to 90% RH the gas response decreases gradually due to different mechanisms of interaction of the TiO 2 with H 2 O and ethanol molecules." @default.
- W3157083799 created "2021-05-10" @default.
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- W3157083799 date "2021-05-17" @default.
- W3157083799 modified "2023-10-10" @default.
- W3157083799 title "Effect of temperature and humidity on the sensing performance of TiO<sub>2</sub> nanowire-based ethanol vapor sensors" @default.
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- W3157083799 doi "https://doi.org/10.1088/1361-6528/abfd54" @default.
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