Nano Archive

A multi-step dealloying method to produce nanoporous gold with no volume change and minimal cracking

Sun, Ye and Balk, T. John (2008) A multi-step dealloying method to produce nanoporous gold with no volume change and minimal cracking. SCRIPTA MATERIALIA, 58 (9). pp. 727-730.

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Official URL: http://dx.doi.org/10.1016/j.scriptamat.2007.12.008

Abstract

We report a simple two-step dealloying method for producing bulk nanoporous gold with no volume change and no significant cracking. The galvanostatic dealloying method used here appears superior to potentiostatic methods for fabricating millimeter-scale samples. Care must be taken when imaging the nanoscale, interconnected sponge-like structure with a focused ion beam, as even brief exposure caused immediate and extensive cracking of nanoporous gold, as well as ligament coarsening at the surface. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Item Type:Article
Uncontrolled Keywords:gold; porous materials; grain boundaries; nanoporous; dealloy
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanochemistry
Material Science > Nanostructured materials
ID Code:2402
Deposited By:Anuj Seth
Deposited On:17 Dec 2008 11:35
Last Modified:17 Dec 2008 11:35

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