Spreading of Liquid AuSi on Vapor−Liquid−Solid-Grown Si Nanowires
- 13 April 2010
- journal article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 10 (5), 1759-1763
- https://doi.org/10.1021/nl100249j
Abstract
Vapor−liquid−solid growth of high-quality Si nanowires relies on the stability of the liquid metal seed. In situ transmission electron microscopy shows that liquid AuSi seed spreads along the sidewalls of Si nanowires for some growth conditions. This liquid thin film phase separates to form solid Au clusters as the nanowire is quenched below the solidus temperature. The length that the liquid film spreads from the seed and its thickness can be explained by considering the spreading thermodynamics of droplets on cylinders.Keywords
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