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• Seker, E
• Reed, ML.
• Begley, MR.
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• Reed, ML.
• Begley, MR.

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Materials 2009, 2(4), 2188-2215; doi:10.3390/ma2042188

Review

Nanoporous Gold: Fabrication, Characterization, and Applications

Erkin Seker ^1,* , Michael L. Reed ²  and Matthew R. Begley ^2,3,4

¹ Center for Engineering in Medicine, Department of Surgery, Harvard Medical School, Massachusetts General Hospital, Shriners Hospitals for Children, Boston, MA 02114, USA ² Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, VA 22904, USA ³ Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, VA 22904, USA ⁴ Department of Materials Science and Engineering, University of Virginia, Charlottesville, VA 22904, USA

* Author to whom correspondence should be addressed.

Received: 27 October 2009; in revised form: 29 November 2009 / Accepted: 2 December 2009 / Published: 3 December 2009

(This article belongs to the Special Issue Porous Materials)

Download PDF Full-Text [2295 KB, uploaded 3 December 2009 12:07 CET]

Abstract: Nanoporous gold (np-Au) has intriguing material properties that offer potential benefits for many applications due to its high specific surface area, well-characterized thiol-gold surface chemistry, high electrical conductivity, and reduced stiffness. The research on np-Au has taken place on various fronts, including advanced microfabrication and characterization techniques to probe unusual nanoscale properties and applications spanning from fuel cells to electrochemical sensors. Here, we provide a review of the recent advances in np-Au research, with special emphasis on microfabrication and characterization techniques. We conclude the paper with a brief outline of challenges to overcome in the study of nanoporous metals.

Keywords: nanoporous; gold; microfabrication; characterization; surface area; morphology; MEMS; catalyst; sensor; gold-silver alloy

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