Necktie-like ZnO nanobelts grown by a self-catalytic VLS process |
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Authors: | J.K. Jian Cong Wang Z.H. Zhang X.L. Chen L.H. Xu T.M. Wang |
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Affiliation: | aCenter for Condensed Matter and Materials Physics, School of Sciences, Beihang University, Beijing 100083, P. R. China;bBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, P. R. China |
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Abstract: | ZnO nanobelts with triangular top/bottom surfaces (so-called necktie-like nanobelts) are synthesized by a vapor transport deposition method. Scanning electron microscopy observations show that the ZnO nanobelts have a necktie-like morphology and are capped by particles. Transmission electron microscopy examinations indicate that the nanobelts have top and bottom surfaces of ± (11–20), and grow along [1–100]. The particles adhered at tips of the nanobelts are proved to be ZnO. On the basis of SEM and TEM observations, it is believed that the growth of the necktie-like ZnO nanobelts is a VLS process catalyzed by Zn droplets, i.e. a self-catalytic VLS growth. The result reported here is new evidence for such a mechanism. |
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Keywords: | Crystal morphology Chemical vapor deposition processes Nanomaterials |
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