Analysis of the contrast in icosahedral gold nanoparticles

被引：31

作者：

Reyes-Gasga, J.

Tehuacanero-Nunez, S.

Montejano-Carrizales, J. M.

Gao, Xiaoxia

Jose-Yacaman, M. ^{[1
]}

机构：

[1] Univ Texas, Dept Chem Engn, Austin, TX 78712 USA

[2] Univ Texas, Texas Mat Inst, Austin, TX 78712 USA

[3] Univ Autonoma San Luis Potosi, Inst Fis, San Luis Potosi 78000, Mexico

[4] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico

来源：

TOPICS IN CATALYSIS | 2007年 / 46卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

gold nanoparticles; nanostructures; quasicrystalline contrast; electron diffraction; electron microscopy; MODEL CATALYST PARTICLES; GEOMETRICAL CHARACTERISTICS; TRANSLATIONAL SYMMETRY; ELECTRON-MICROSCOPY; TENFOLD TWINS; PACKING; RHODIUM;

D O I：

10.1007/s11244-007-0311-y

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

When observing nanoparticles with the transmission electron microscope very often we observe a contrast that can be interpreted at first sight as coming from a some kind of a quasicrystalline array, i.e. with order but not periodicity. In the case of icosahedral particles their structure has been well studied by many years and their contrast explained in terms of twins. In this work we present the analysis of the quasi-periodic contrast observed in icosahedral gold nanoparticles along the five-fold direction, which resembles the contrasts of a quasicrystalline structures. A detailed analysis led us to demonstrate that it could correspond to a Moire-pattern artifact produced in an array of Mackay icosahedra.

引用

页码：23 / 30

页数：8

共 17 条

[1] QUASICRYSTAL WITH ONE-DIMENSIONAL TRANSLATIONAL SYMMETRY AND A TENFOLD ROTATION AXIS [J].