Title

Morphology Instability Of Silicon Nitride Nanowires

Abstract

We report that cylinder-shaped Si 3N 4 nanowires are not stable and can gradually transform into nanobelts via surface diffusion during high-temperature annealing. We demonstrate that such instability is driven by the requirements for reducing overall surface energy. The resultant nanobelts have the same width-to-thickness ratio, suggesting a stable morphology. A model in terms of surface energy is proposed to explain the formation of such stable morphology, which agrees well with experimental results. Our result suggests that instability could be a limiting factor for high-temperature applications of 1D nanostructures. © 2009 American Chemical Society.

Publication Date

4-16-2009

Publication Title

Journal of Physical Chemistry C

Volume

113

Issue

15

Number of Pages

5902-5905

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/jp901938a

Socpus ID

65249100810 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/65249100810

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