High-Index Facets in Gold Nanocrystals Elucidated by Coherent Electron Diffraction
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- 作者：Amish B. Shah ; Sean T. Sivapalan ; Brent M. DeVetter ; Timothy K. Yang ; Jianguo Wen ; Rohit Bhargava ; Catherine J. Murphy ; Jian-Min Zuo
- 刊名：Nano Letters
- 出版年：2013
- 出版时间：April 10, 2013
- 年：2013
- 卷：13
- 期：4
- 页码：1840-1846
- 全文大小：400K
- 年卷期：v.13,no.4(April 10, 2013)
- ISSN：1530-6992
文摘
Characterization of high-index facets in noble metal nanocrystals for plasmonics and catalysis has been a challenge due to their small sizes and complex shapes. Here, we present an approach to determine the high-index facets of nanocrystals using streaked Bragg reflections in coherent electron diffraction patterns, and provide a comparison of high-index facets on unusual nanostructures such as trisoctahedra. We report new high-index facets in trisoctahedra and previous unappreciated diversity in facet sharpness.