The Periodic Instability of Diameter of ZnO Nanowires via a Self-oscillatory MechanismReport as inadecuate




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Nanoscale Research Letters

, 2:492

First Online: 13 September 2007Received: 17 August 2007Accepted: 30 August 2007

Abstract

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.

KeywordsZnO nanowire Negative feed-back mechanism Growth mechanism Physical vapor deposition  Download fulltext PDF



Author: Ye Zhang - Youguo Yan - Feng Zhu

Source: https://link.springer.com/



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