The periodic instability of diameter of ZnO nanowires via a self-oscillatory mechanism

被引：12
|
作者：
Zhang, Ye [1 ]
Yan, Youguo [1 ]
Zhu, Feng [1 ]
机构：
[1] Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
来源：
NANOSCALE RESEARCH LETTERS | 2007年 / 2卷 / 10期
关键词：
ZnO nanowire; negative feed-back mechanism; growth mechanism; physical vapor deposition;
D O I：
10.1007/s11671-007-9094-0
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
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).
引用
收藏
页码：492 / 495
页数：4
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