2008 NSTI Nanotechnology Conference and Trade Show - Nanotech 2008 - 11th Annual

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Clean Technology 2008

Nucleation and growth kinetics study of ZnMgO nanowires at low temperature

P-X Gao, P. Shimpi, D. Goberman
University of Connecticut, US

surface analysis, nanowire, nucleation, growth kinetics

The nucleation and growth process of nanowires during hydrothermal synthesis has not been well-understood so far in spite of its widespread use in electronic nanomaterials fabrication. In this work, a systematic investigation has been conducted on the initiation process of ZnMgO nanowires at low temperature. The diameters and shapes of the nanowires can be controlled in the range of 100-1000 nm depending on the growth parameters such as temperature, duration time and PH control. The formation of initial layer of nanowire attached to substrate has been found to be closely related to a self-organized multiple-seeding process, as confirmed by using a variety of microscopy and spectroscopy techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES). It is expected that further studies in this regard could possibly provide a generic approach to control the initial stage of solution phase growth so as to tailor the later growth process of nanowires.

Nanotech 2008 Conference Program Abstract