Three-dimensional morphology and crystallography of gold nanorods

Nano Lett. 2011 Jan 12;11(1):273-8. doi: 10.1021/nl103726k. Epub 2010 Dec 23.

Abstract

We determine the three-dimensional shape, to within 1 nm resolution, of single-crystal gold nanorods grown in the presence of silver ions using electron tomography and thickness profile measurements. We find that, contrary to the current literature, the octagonal side-facets are sparsely packed atomic planes all belonging to the same symmetry-equivalent family, {0 5 12}. Furthermore, the rod ends terminate in a pyramid with slightly different facets, and each pyramid is connected to the sides by four small {0 5 12} "bridging" facets.

Publication types

  • Research Support, Non-U.S. Gov't