Self-assembled nanoparticle spirals from two-dimensional compositional banding in thin films
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Venkatachalam, Dinesh K.; Fletcher, Neville H.; Sood, Dinesh K.; Elliman, Robert G.
Description
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 |
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Date published: | 2009-05-28 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/17048 |
Source: | Applied Physics Letters |
DOI: | 10.1063/1.3143666 |
Access Rights: | Open Access |
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01_Venkatachalam_Self-assembled_nanoparticle_2009.pdf | Published Version | 343.53 kB | Adobe PDF |
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