Morphological and topological analysis of coarsened nanoporous gold by x-ray nanotomography
Morphological and topological analysis of coarsened nanoporous gold by x-ray nanotomography
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DOI：
10.1063/1.3285175
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发表时间：
2010-01-25
影响因子：
4
通讯作者：
Dunand, David C.
中科院分区：
文献类型：
--
作者：
Chen, Yu-chen Karen;Chu, Yong S.;Dunand, David C.
我们使用 X 射线纳米断层扫描来表征粗化后脱合金纳米多孔金的三维 (3D) 形态和拓扑结构。从纳米断层扫描测量获得的界面形状分布表明，粗化不是通过体扩散进行的。表面正态分布表明纳米多孔金的形貌是各向异性的。纳米多孔金的拓扑结构与通过相分离创建的其他双连续结构相似，尽管用于生产结构的方法截然不同。这项工作为 3D 纳米多孔金粗化的时间分辨原位研究打开了大门。
We used x-ray nanotomography to characterize the three-dimensional (3D) morphology and topology of dealloyed nanoporous gold after coarsening. The interface shape distribution obtained from the nanotomography measurement shows that the coarsening does not proceed by bulk diffusion. The surface normal distribution shows that the morphology of the nanoporous gold is anisotropic. The topology of nanoporous gold is similar to that of other bicontinuous structures created by phase separation, despite the radically different method used to produce the structures. This work opens the door to time-resolved, in situ studies of coarsening of nanoporous gold in 3D.