Bundled Silicon Nitride Nanorings

    Authors

    W. Y. Yang; X. M. Cheng; H. T. Wang; Z. P. Xie; F. Xing;L. N. An

    Comments

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    Abbreviated Journal Title

    Cryst. Growth Des.

    Keywords

    SINGLE-CRYSTAL NANORINGS; SELF-COILING; NANOWIRES; NANOBELTS; ALPHA-SI3N4; THIN; CARBON; PHOTOLUMINESCENCE; NANOSTRUCTURES; NANOPARTICLES; Chemistry, Multidisciplinary; Crystallography; Materials Science, ; Multidisciplinary

    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 similar to 1:2, regardless of the nanowire size. The formation of the thick amorphous 0 layer is likely due to the high At 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.

    Journal Title

    Crystal Growth & Design

    Volume

    8

    Issue/Number

    11

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    3921

    Last Page

    3923

    WOS Identifier

    WOS:000260675500013

    ISSN

    1528-7483

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