High-Index Facets in Gold Nanocrystals Elucidated by Coherent Electron Diffraction

被引：24

作者：

Shah, Amish B. ^{[1
]}

Sivapalan, Sean T. ^{[1
,2
]}

DeVetter, Brent M. ^{[1
,3
,4
]}

Yang, Timothy K. ^{[5
]}

Wen, Jianguo ^{[6
]}

Bhargava, Rohit ^{[3
,4
,7
,8
]}

Murphy, Catherine J. ^{[1
,2
,5
]}

Zuo, Jian-Min ^{[1
,2
]}

机构：

[1] Univ Illinois, Ctr Microanal Mat, Mat Res Lab, Urbana, IL 61801 USA

[2] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA

[3] Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA

[4] Univ Illinois, Beckman Inst Adv Sci & Technol, Urbana, IL 61801 USA

[5] Univ Illinois, Dept Chem, Urbana, IL 61801 USA

[6] Argonne Natl Lab, Ctr Electron Microscopy, Argonne, IL 60439 USA

[7] Univ Illinois, Dept Bioengn, Urbana, IL 61801 USA

[8] Univ Illinois, Dept Mech Sci & Engn, Micro & Nanotechnol Lab, Urbana, IL 61801 USA

来源：

NANO LETTERS | 2013年 / 13卷 / 04期

关键词：

Coherent electron diffraction; Au; nanocrystallography; atomic structure; SHAPE-CONTROLLED SYNTHESIS; METAL NANOPARTICLES; GROWTH; MICROSCOPY; NANORODS;

D O I：

10.1021/nl400609t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：1840 / 1846

页数：7

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