Evolution of crystallinity of free gold agglomerates and shape transformation

被引：7
|
作者：
Nanda, Karuna Kar [1 ]
Maisels, Arkadi [2 ]
Kruis, Frank Einar [2 ]
机构：
[1] Indian Inst Sci, Mat Res Ctr, Bangalore 560012, Karnataka, India
[2] Univ Duisburg Essen, Inst Technol Nanostruct, D-47051 Duisburg, Germany
来源：
RSC ADVANCES | 2011年 / 1卷 / 04期
关键词：
MOLECULAR-DYNAMICS; SURFACE-DIFFUSION; NANOPARTICLES; COALESCENCE; TEMPERATURE; NANORODS; NANOSTRUCTURES; NANOCLUSTERS; PARTICLES; CLUSTERS;
D O I：
10.1039/c1ra00208b
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We report the shape evolution of free gold agglomerates with different morphologies that transform to ellipsoidal and then to spherical shapes during the heating cycle. The shape transformation is associated with a structural transition from polycrystalline to single crystalline. The structural transition temperature is shown to be dependent on the final size of the particles and not on the initial morphologies of the agglomerates. It is also shown that the transition occurs well below the melting temperature which is in contrast with the melt-freeze process reported in the literature.
引用
收藏
页码：568 / 572
页数：5
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