论文标题
一个由纳米质和弯曲表面组成的金色复合物单晶
A gold complex single crystal comprised of nanoporosity and curved surfaces
论文作者
论文摘要
复杂的分层形状在生物源性单晶中广为人知，但是复杂的合成金属单晶的生长仍然是一个挑战。在这里，我们报告了一种简单的方法，用于种植精致形状的金色的金晶体，每个晶体由一个由纳米多孔结构包围的微米大小的晶体组成，而两个部分则包含一个单晶。这是通过退火薄膜和锗的薄膜来实现的，以巩固在高透明浓度（富含Au富集的组成）处的共晶合作融化。透射电子显微镜和同步子微米扫描衍射法和成像确认整个结构确实是单晶体。一个动力学模型，显示如何生长这种复杂的单晶结构。
Complex hierarchical shapes are widely known in biogenic single crystals, but growing of intricate synthetic metal single crystals is still a challenge. Here we report on a simple method for growing intricately shaped single crystals of gold, each consisting of a micron-sized crystal surrounded by a nanoporous structure, while the two parts comprise a single crystal. This is achieved by annealing thin films of gold and germanium to solidify a eutectic composition melt at a hypoeutectic concentration (Au-enriched composition). Transmission electron microscopy and synchrotron submicron scanning diffractometry and imaging confirms that the whole structure was indeed a single crystal. A kinetic model showing how this intricate single-crystal structure can be grown is presented.
