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

Ye Sun; T. John Balk

doi:10.1016/j.scriptamat.2007.12.008

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

Ye Sun
, T. John Balk

Research output: Contribution to journal › Article › peer-review

105 Scopus citations

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.

Original language	English
Pages (from-to)	727-730
Number of pages	4
Journal	Scripta Materialia
Volume	58
Issue number	9
DOIs	https://doi.org/10.1016/j.scriptamat.2007.12.008
State	Published - May 2008

Bibliographical note

Funding Information:
Acknowledgment is made to the Donors of the American Chemical Society Petroleum Research Fund, for support of this research. The authors acknowledge support of the National Center for Electron Microscopy, Lawrence Berkeley Laboratory, which is supported by the US Department of Energy under Contract No. DE-AC02-05CH11231.

Funding

Acknowledgment is made to the Donors of the American Chemical Society Petroleum Research Fund, for support of this research. The authors acknowledge support of the National Center for Electron Microscopy, Lawrence Berkeley Laboratory, which is supported by the US Department of Energy under Contract No. DE-AC02-05CH11231.

Funders	Funder number
Michigan State University-U.S. Department of Energy (MSU-DOE) Plant Research Laboratory	DE-AC02-05CH11231
American Chemical Society Petroleum Research Fund

Keywords

Dealloy
Gold
Grain boundaries
Nanoporous
Porous materials

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Access to Document

10.1016/j.scriptamat.2007.12.008

Cite this

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

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.",

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author = "Ye Sun and Balk, \{T. John\}",

note = "Funding Information: Acknowledgment is made to the Donors of the American Chemical Society Petroleum Research Fund, for support of this research. The authors acknowledge support of the National Center for Electron Microscopy, Lawrence Berkeley Laboratory, which is supported by the US Department of Energy under Contract No. DE-AC02-05CH11231.",

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language = "English",

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AU - Sun, Ye

AU - Balk, T. John

N1 - Funding Information: Acknowledgment is made to the Donors of the American Chemical Society Petroleum Research Fund, for support of this research. The authors acknowledge support of the National Center for Electron Microscopy, Lawrence Berkeley Laboratory, which is supported by the US Department of Energy under Contract No. DE-AC02-05CH11231.

PY - 2008/5

Y1 - 2008/5

N2 - 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.

AB - 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.

KW - Dealloy

KW - Gold

KW - Grain boundaries

KW - Nanoporous

KW - Porous materials

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DO - 10.1016/j.scriptamat.2007.12.008

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VL - 58

SP - 727

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JO - Scripta Materialia

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IS - 9

ER -

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

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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