Length versus Radius Relationship for ZnO Nanowires Grown via Vapor Phase Transport

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 fro...

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Bibliographic Details
Published inCrystal growth & design Vol. 12; no. 12; pp. 5972 - 5979
Main Authors Saunders, Ruth B, Garry, Seamus, Byrne, Daragh, Henry, Martin O, McGlynn, Enda
Format Journal Article
LanguageEnglish
Published Washington,DC American Chemical Society 05.12.2012
Subjects
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Materials science
Methods of nanofabrication
Nanoscale materials and structures: fabrication and characterization
Other topics in nanoscale materials and structures
Physics
Quantum wires
Experimental data
Vapor phase
Theoretical study
Zinc oxide
Surface diffusion
Nanowires
Nanostructured materials
Nanomaterial synthesis
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Summary: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.
ISSN:1528-7483
1528-7505
DOI:10.1021/cg3009738