The Periodic Instability of Diameter of ZnO Nanowires via a Self-oscillatory Mechanism

被引：0
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作者：
Ye Zhang
Youguo Yan
Feng Zhu
机构：
[1] Institute of Solid State Physics,Key Laboratory of Materials Physics
[2] Hefei Institutes of Physical Science,undefined
[3] Chinese Academy of Sciences,undefined
来源：
Nanoscale Research Letters | / 2卷
关键词：
ZnO nanowire; Negative feed-back mechanism; Growth mechanism; Physical vapor deposition;
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摘要：
ZnO nanowires with a periodic instability of diameter were successfully prepared by a thermal physical vapor deposition method. The morphology of ZnO nanowires was investigated by SEM. SEM shows ZnO possess periodic bead-like structure. The instability only appears when the diameter of ZnO nanowires is small. The kinetics and mechanism of Instability was discussed at length. The appearance of the instability is due to negative feed-back mechanism under certain experimental conditions (crystallization temperature, vapor supersaturation, etc).
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