Department of Materials Engineering and Monash Centre for Electron Microscopy, Monash University, Victoria 3800, Australia.
Nano Lett. 2011 Jan 12;11(1):273-8. doi: 10.1021/nl103726k. Epub 2010 Dec 23.
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.
我们使用电子断层扫描和厚度剖面测量技术，以 1nm 的分辨率确定了在银离子存在下生长的单晶金纳米棒的三维形状。我们发现，与当前文献相反，八边形的侧面对角线是稀疏排列的原子平面，都属于同一对称等效族，{0512}。此外，棒的末端以略微不同的面终止于一个金字塔，每个金字塔通过四个小的{0512}“桥接”面与侧面连接。
