Length versus Radius Relationship for ZnO Nanowires Grown via Vapor Phase Transport
Crystal Growth & Design2012Vol. 12(12), pp. 5972–5979
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Abstract
We model the growth of ZnO nanowires via vapor phase transport and examine the relationship predicted between nanowire length and radius. The model predicts that the lengths of the nanowires increase with decreasing nanowire radii. This prediction is in very good agreement with experimental data from a variety of nanowire samples, including samples showing a broad range of nanowire radii and samples grown using a lithographic technique to constrain the nanowire radius. The close agreement of the model and the experimental data strongly supports the inclusion of a surface diffusion term in the model for the incorporation of species into a growing nanowire.
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