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(Color online) Schematic diagram of the growth and processing steps of the ZnO nanowire ethanol gas sensor with Pd adsorption.
(a) Top-view FESEM image of the ZnO nanowires grown on template. Enlarged SEM photographs of the ZnO nanowires grown onto spacer regions (b) without and (c) with Pd adsorption. (d) EDX spectrum measured from the surface of the stained ZnO nanowire. The inset in figure (a) shows cross-sectional FESEM image of the as-deposited ZnO nanowires.
Measured sensitivities of the fabricated nanowire sensors with ethanol gas.
Response of the ZnO nanowire ethanol gas sensor measured at various ethanol concentrations.
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