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- W2079757191 abstract "In present work, we report the synthesis of SnO<sub>2</sub> nanowires on gold catalyzed silicon substrate and implementation of these grown SnO<sub>2</sub> nanowires as a sensing element for methanol sensing. The SnO<sub>2</sub> nanowires were synthesized by using thermal evaporation method. The growth of SnO<sub>2</sub> nanowires was carried out on gold catalyzed silicon (Au/Si) substrate by thermal evaporation of a mixture of SnO<sub>2</sub> and graphite powders in Argon (Ar) ambience at a temperature of 1050°C. The growth of SnO<sub>2</sub> nanowires takes place at atmospheric pressure. The surface morphology study reveals the growth of SnO<sub>2</sub> nanowires (diameter~ 300 nm, length~ 50 μm) on the Au coated silicon substrate. The XRD analysis concludes that synthesized SnO<sub>2</sub> nanostructures show polycrystalline nature with tetragonal rutile structure. The vapor-liquid-solid (VLS) growth mechanism of SnO<sub>2</sub> nanowires were also confirmed by EDX spectra. The SnO<sub>2</sub> nanowires were used to fabricate single SnO<sub>2</sub> nanowire based methanol gas sensor. The result reveals that the device exhibit the resistance change from 23 MΩ to 10 KΩ upon exposing to 200 ppm concentration of methanol gas at 100°C. This sensing behaviour offers a suitable application of the SnO<sub>2</sub> nanowire sensor for detection of methanol gas." @default.
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- W2079757191 date "2012-10-15" @default.
- W2079757191 modified "2023-10-05" @default.
- W2079757191 title "Low temperature tin oxide (SnO2) nanowire gas sensor" @default.
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- W2079757191 doi "https://doi.org/10.1117/12.924698" @default.
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