Tracking the catalyzed growth process of nanowires by in situ x-ray diffraction

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Kirkham, Melanie
Wang, Z. L. (Zhong Lin)
Snyder, Robert L.
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http://hdl.handle.net/1853/36486
Abstract
Quasi-one-dimensional nanostructures of silicon, oxides, and other materials show great promise for a variety of applications. These nanostructures are commonly grown using metal catalyst nanoparticles. This paper investigates the growth mechanism of Au-catalyzed Si nanowires through in situ x-ray diffraction, and the results are compared to previously studied Au-catalyzed ZnO nanorods. The Si nanowires were found to grow from molten catalyst particles, however, the ZnO nanorods were found to grow from solid catalyst particles through a surface diffusion process. From this comparison, the relative bonding types of the catalyst and source material are determined to have a significant effect on the growth mechanism.
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2010-07-06
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