Self-assembled nanoparticle spirals from two-dimensional compositional banding in thin films
A self-assembly process is reported in which spiral patterns of goldnanoparticles form on siliconsurfaces during the epitaxial crystallization of thin gold-silicon alloy layers. This behavior is observed only for gold concentrations above a critical value and is shown to result from two-dimensional compositional banding of a liquid alloy layer during the crystallization process. The compositional banding consists of alternate gold-rich and silicon-rich alloy bands, which are shown to be a...[Show more]
|Collections||ANU Research Publications|
|Source:||Applied Physics Letters|
|01_Venkatachalam_Self-assembled_nanoparticle_2009.pdf||Published Version||343.53 kB||Adobe PDF|
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