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SEM images of (a) ZnO nanowires and (b) Ni capped ZnO nanowires.
(a) TEM images of a Ni capped ZnO nanowire. HRTEM images and SAED patterns of the Ni cap and ZnO nanowires are shown in the top left and the bottom right, respectively. (b) EDX spectra of the Ni cap and (c) ZnO nanowires.
SEM images of the dispersed nanowires on the Ni electrode and rectangular patterns. The distances between the electrodes are (a) 4, 6, 8, and . The dimensions of the patterns are , , and .
(a) curves for measuring the photocurrents and the dark currents of the single and multiple nanowire-based UV sensors. (b) Time-response characteristics of the relative current of the single and multiple nanowire-based UV sensors.
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