Journal
NATURE MATERIALS
Volume 11, Issue 11, Pages 930-935Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/NMAT3462
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Funding
- Flemish Fund for Scientific Research (FWO Vlaanderen)
- European Research Council (ERC) [24691-COUNTATOMS, 267867-PLASMAQUO]
- European Union (Integrated Infrastructure Initiative) [262348]
- Flemish Hercules 3 programme for large infrastructure
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It is widely accepted that the physical properties of nanostructures depend on the type of surface facets(1,2). For Au nanorods, the surface facets have a major influence on crucial effects such as reactivity and ligand adsorption and there has been controversy regarding facet indexing(3,4). Aberration-corrected electron microscopy is the ideal technique to study the atomic structure of nanomaterials(5,6). However, these images correspond to two-dimensional (2D) projections of 3D nano-objects, leading to an incomplete characterization. Recently, much progress was achieved in the field of atomic-resolution electron tomography, but it is still far from being a routinely used technique. Here we propose a methodology to measure the 3D atomic structure of free-standing nanoparticles, which we apply to characterize the surface facets of Au nanorods. This methodology is applicable to a broad range of nanocrystals, leading to unique insights concerning the connection between the structure and properties of nanostructures.
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