Grain boundary scars on spherical crystals
Grain boundary scars on spherical crystals
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DOI：
10.1021/la0517383
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发表时间：
2005-12-20
期刊：
影响因子：
3.9
通讯作者：
Bausch, AR
中科院分区：
文献类型：
--
作者：
Einert, T;Lipowsky, P;Bausch, AR
我们提出了一个实验系统，适用于生产球形晶体和观察的晶格缺陷（向错和位错）的分布上的一个显着的分数（50%）的球。荧光标记颗粒的引入使我们能够确定晶界疤痕的位置和方向。我们发现，疤痕的总数和每疤痕的多余位错的数量与理论预测一致，疤痕的几何中心大致位于一个二十面体的顶点。
We present an experimental system suitable for producing spherical crystals and for observing the distribution of lattice defects (disclinations and dislocations) on a significant fraction (50%) of the sphere. The introduction of fluorescently labeled particles enables us to determine the location and orientation of grain boundary scars. We find that the total number of scars and the number of excess dislocations per scar agree with theoretical predictions and that the geometrical centers of the scars are roughly positioned at the vertices of an icosahedron.