Structural properties of silver nanorods with fivefold symmetry.
The microstructural features of silver nanorods with the average length of 50 microm and diameters of around 100 nm have been investigated by means of SEM, X-ray diffraction, and transmission-electron microscopy (TEM). Silver nanorods in general have a pentagonal shape with a remarkable fivefold symmetry as revealed in cross-section observations. The fivefold axis, i.e. the growth direction, normally goes along the [110]-zone axis direction of the basic fcc Ag-structure. The twinning relationships and relevant twin boundaries among the five subunits in the pentagonal nanorod have been examined by high-resolution TEM and selected-area electron diffraction. Defects and stacking faults in this kind of nanorods have been briefly analyzed.
Chen
Hanyuan
H
Beijing Laboratory of Electron Microscopy, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China.
Gao
Yan
Y
Yu
Hongchun
H
Zhang
Huairou
H
Liu
Libao
L
Shi
Youguo
Y
Tian
Huanfang
H
Xie
Sishen
S
Li
Jianqi
J