A Mechanism for Symmetry Breaking and Shape Control in Single-Crystal Gold Nanorods

2017/11/16 by Michael J. Walsh, Michael Walsh, Wenming Tong +5 · 18 citations
Materials Science · #Gold and Silver Nanoparticles Synthesis and Applications #Nanocluster Synthesis and Applications #Pickering emulsions and particle stabilization

paper · doi:10.1021/acs.accounts.7b00313

Abstract

] ratio that directly determines the particle size at which the more open atomic surfaces can be stabilized by silver and the rate of growth in the width direction following symmetry breaking, thus explaining the known aspect ratio control with Ag ion concentration. We describe the evolving surface faceting of the nanorod and the emergence of higher-index facets. Collectively, these observations allow us to identify facet-size and edge-atom effects as a simple fundamental driver of symmetry breaking and the subsequent development of new surfaces in the presence of adsorbates.

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