Title

Bundled Silicon Nitride Nanorings

Abstract

Bundled nanorings composed of several self-coiled nanowires are synthesized by catalyst-assisted pyrolysis of a polymeric precursor. Microstructural observation reveals that the nanowires have a bilayer structure consisting of a thin single-crystal Si3N4 layer and a thick amorphous layer. The thickness ratio of the two layers is ∼ 1:2, regardless of the nanowire size. The formation of the thick amorphous layer is likely due to the high A1 concentration within the precursor. The self-coiling mechanism is discussed and attributed to the difference in growth rates of the two layers. A phenomena model is proposed to account for the formation of the nanoring structure. © 2008 American Chemical Society.

Publication Date

11-1-2008

Publication Title

Crystal Growth and Design

Volume

8

Issue

11

Number of Pages

3921-3923

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/cg800708z

Socpus ID

61549141699 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/61549141699

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