Three-dimensional morphology of nanoporous gold

被引：227

作者：

Fujita, Takeshi ^{[1
]}

Qian, Li-Hua ^{[1
]}

Inoke, Koji ^{[2
]}

Erlebacher, Jonah ^{[3
]}

Chen, Ming-Wei ^{[1
]}

机构：

[1] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] FEI Co Japan Ltd, Minato Ku, Tokyo 1080075, Japan

[3] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 25期

关键词：

D O I：

10.1063/1.2948902

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report transmission electron tomography of nanoporous gold fabricated by chemically dealloying Au35Ag65 films. A number of algorithms were employed to quantitatively characterize the complex three-dimensional nanoporous structure. It was found that gold ligaments and nanopore channels are topologically and morphologically equivalent, i.e., they are inverses of each other in three-dimensional space. Statistical analysis reveals that this bicontinuous nanostructured material is actually quasiperiodic and has, on average, a near zero surface curvature. These quantitative measurements will help in understanding the structural stability of nanoporous gold and in modeling its physical and chemical performances. (C) 2008 American Institute of Physics.

引用

页数：3

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[1] The effect of size-dependent nanoparticle energetics on catalyst sintering [J].