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Controlled growth of ZnO torch-like nanostructure arrays

✍ Scribed by Jing Xiao; Wei Zhang; Yue Wu; Hui Sun

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
316 KB
Volume
43
Category
Article
ISSN
0232-1300

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✦ Synopsis

Abstract

Single‐crystal ZnO torch‐like nanostructure arrays were synthesized using a simple two‐step pressure controlled thermal evaporation method without any catalyst. The nanostructures had a hierarchical morphology, with well‐hexagonal faceted holders and needle‐like flames on them. The diameter of each single flame was about 20–40nm at the base and 10nm at the tip. Both the holders and flames were found to grow along the [0001] direction. The morphology of the structures could be effectively controlled by varying the growth temperature and vacuum pressure. The experimental results and analysis provided easy strategies to control the morphology of nanostructures and also enhanced the understanding of the growth mechanism. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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