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(a) SEM image of NWs on Cu foils. Inset shows a high magnification SEM image, (b) XRD pattern of NWs on Cu foil, (c) TEM, and (d) HRTEM images of NWs; the inset of (c) shows the corresponding selected area electron diffraction pattern.
PL of a single NW, inset of (b) shows an optical (left) and PL (middle) images of the individual NW. The right inset is a large-view optical image of PL emission under illumination of a green laser. The bright spot shows the strong PL emission from NW. Scale .
(a) curve of single NW FET, inset shows optical image of a single NW FET, scale . (b) curves of a single NW FET. (c) curves of a single NW in the dark, and 488 nm laser illumination. (d) Photoresponse of a NW, biased at 2.5 V, with 488 nm laser illumination.
(a) curve of NWs at room temperature; inset of (a) displays the curve of NWs. (b) curve of CuO NWs at 5 and 350 K.
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