Domènech-Gil, G., Barth, S. C., Samà, J., Pelegrino, P., Gracia, I., Cane, C., & Romano-Rodriquez, A. (2017). Gas sensors based on individual indium oxide nanowire. Sensors and Actuators B: Chemical, 238, 447–454. https://doi.org/10.1016/j.snb.2016.07.084
Electrical and Electronic Engineering; Condensed Matter Physics; Electronic, Optical and Magnetic Materials; Instrumentation; Surfaces, Coatings and Films; Materials Chemistry; Metals and Alloys; Indium oxide; Nanowires; Gas nanosensor; Chemoresistor
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Abstract:
Indium oxide nanostructures have been prepared by carbothermal reduction method. From them,nanowires have been structurally and optically characterized using X-ray diffraction, scanning and trans-mission electron microscopy and photoluminescence. The indium oxide nanowires have been removedfrom the substrate and contacted by Focused Electron- and Focused Ion-Beam Induced Deposition tech-niques to interdigitates on suspended microhotplates, which allow heating up to 300◦C with a low powerconsumption of only 8 mW. The gas response of the tested devices towards ethanol, carbon monoxideand nitrogen dioxide diluted in dry synthetic air at different concentrations and temperatures has beencarried out showing a selectivity towards ethanol with responses up to 50% at temperatures between 200and 300◦C, while only small response to high concentrations of carbon monoxide and nitrogen dioxideis observed.
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Research Areas:
Structure-Property Relationship: 60% Non-metallic Materials: 20% Surfaces and Interfaces: 20%