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(a) SEM image of the as-synthesis sample. Ringlike structures were grown. (b) Enlarged image of a typical single ring. (c) EDX spectrum of the nanorings.
Zinc-blende structured nanowires grown at . The inset is the XRD pattern of the nanowire, only ZnSe zinc-blende peaks present.
(a) TEM image of a single ring. The insets are the SAED patterns of the corresponding regions of the ring as marked in the figure. (b) TEM image of a nanobelt forming the ring, the upper inset is the SAED taken at the center of the belt and the lower inset is the structure model of the ZnSe nanobelt.
(a) CL spectrum of the nanoring; (b) SEM image of a typical nanoring; (c) CL image of the nanoring.
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