Atomic-scale observation of vapor-solid nanowire growth via oscillatory mass transport

Zhengfei Zhang, Yong Wang, Hengbo Li, Wentao Yuan, Xiaofeng Zhang, Chenghua Sun, Ze Zhang

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25 Citations (Scopus)

Abstract

In situ atomic-scale transmission electron microscopy (TEM) can provide critical information regarding growth dynamics and kinetics of nanowires. A catalyst-Aided nanowire growth mechanism has been welldemonstrated by this method. By contrast, the growth mechanism of nanowires without catalyst remains elusive because of a lack of crucial information on related growth dynamics at the atomic level. Herein, we present a real-Time atomic-scale observation of the growth of tungsten oxide nanowires through an environmental TEM. Our results unambiguously demonstrate that the vapor-solid mechanism dominates the nanowire growth, and the oscillatory mass transport on the nanowire tip maintains the noncatalytic growth. Autocorrelation analysis indicates that adjacent nucleation events in the nanowire growth are independent of each other. These findings may improve the understanding of the vapor-solid growth mechanism of nanowires.

Original languageEnglish
Pages (from-to)763-769
Number of pages7
JournalACS Nano
Volume10
Issue number1
DOIs
Publication statusPublished - 26 Jan 2016

Keywords

  • In situ TEM
  • Metal oxide
  • Nanowire growth
  • Oscillatory mass transport
  • Vapor-solid

Cite this

Zhang, Z., Wang, Y., Li, H., Yuan, W., Zhang, X., Sun, C., & Zhang, Z. (2016). Atomic-scale observation of vapor-solid nanowire growth via oscillatory mass transport. ACS Nano, 10(1), 763-769. https://doi.org/10.1021/acsnano.5b05851