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A Computational Study of Aspects of ZnO Nanorod  Film Electro-Crystallisation

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thesis
posted on 10.11.2021, 01:14 by Mackay, Jade River

A new generation of material technologies is being produced by tuning the properties of an existing material through control of the size and shape on the nanoscale. Zinc oxide is an excellent candidate for such an approach due to its possession of a plethora of useful properties, both mechanical and electronic, and a fantastically rich family of morphologies accessible on the nanoscale. A more detailed control over the nano-structure of these materials requires a more detailed understanding of the events that control the growth. We have undertaken computational studies of the electrodeposition of zinc oxide nano-rod films to open up and improve the understanding of the pathways, and events that facilitate the controlled selection of desired structures and therefore properties. We have applied methods that span vastly different scales to provide insight on the continuum and atomistic regimes. Specifically, we have developed a macroscopic transport model to track the evolution of crystallite shape, surrounding concentration distributions, and electric field variation. The macroscopic view is complemented with a classical description of crystal growth, in which we obtain the key parameters using quantum mechanical calculations.

History

Copyright Date

01/01/2009

Date of Award

01/01/2009

Publisher

Te Herenga Waka—Victoria University of Wellington

Rights License

Author Retains Copyright

Degree Discipline

Physics

Degree Grantor

Te Herenga Waka—Victoria University of Wellington

Degree Level

Doctoral

Degree Name

Doctor of Philosophy

Victoria University of Wellington Item Type

Awarded Doctoral Thesis

Language

en_NZ

Victoria University of Wellington School

School of Chemical and Physical Sciences

Advisors

Hendy, Shaun; McGrath, Kathryn