Microstructure, stability and thermomechanical behavior of crack-free thin films of nanoporous gold

Ye Sun; Kalan P. Kucera; Sofie A. Burger; T. John Balk

doi:10.1016/j.scriptamat.2008.01.036

Microstructure, stability and thermomechanical behavior of crack-free thin films of nanoporous gold

Ye Sun, Kalan P. Kucera, Sofie A. Burger, T. John Balk

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

65 Scopus citations

Abstract

Nanoporous gold thin films were prepared by dealloying and were completely crack-free, with a continuous ligament network across grain boundaries. Film stress increases during dealloying, and thermal cycling causes thermoelastic deformation. Ligament width coarsens during cycling to 200 °C, but at higher temperatures the porous structure densifies. The stability of nanoporous films may also depend on film thickness. From the biaxial film stress, the equivalent yield strength of nanoporous gold was calculated to be at least 1.8 GPa.

Original language	English
Pages (from-to)	1018-1021
Number of pages	4
Journal	Scripta Materialia
Volume	58
Issue number	11
DOIs	https://doi.org/10.1016/j.scriptamat.2008.01.036
State	Published - Jun 2008

Bibliographical note

Funding Information:
Acknowledgment is made to the Donors of the American Chemical Society Petroleum Research Fund, for support of this research.

Funding

Acknowledgment is made to the Donors of the American Chemical Society Petroleum Research Fund, for support of this research.

Funders	Funder number
American Chemical Society Petroleum Research Fund

Keywords

Dealloying
Gold
Nanoporous
Thin film

ASJC Scopus subject areas

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

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10.1016/j.scriptamat.2008.01.036

Cite this

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title = "Microstructure, stability and thermomechanical behavior of crack-free thin films of nanoporous gold",

abstract = "Nanoporous gold thin films were prepared by dealloying and were completely crack-free, with a continuous ligament network across grain boundaries. Film stress increases during dealloying, and thermal cycling causes thermoelastic deformation. Ligament width coarsens during cycling to 200 °C, but at higher temperatures the porous structure densifies. The stability of nanoporous films may also depend on film thickness. From the biaxial film stress, the equivalent yield strength of nanoporous gold was calculated to be at least 1.8 GPa.",

keywords = "Dealloying, Gold, Nanoporous, Thin film",

author = "Ye Sun and Kucera, \{Kalan P.\} and Burger, \{Sofie A.\} and \{John Balk\}, T.",

note = "Funding Information: Acknowledgment is made to the Donors of the American Chemical Society Petroleum Research Fund, for support of this research.",

year = "2008",

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language = "English",

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AU - Sun, Ye

AU - Kucera, Kalan P.

AU - Burger, Sofie A.

AU - John Balk, T.

N1 - Funding Information: Acknowledgment is made to the Donors of the American Chemical Society Petroleum Research Fund, for support of this research.

PY - 2008/6

Y1 - 2008/6

N2 - Nanoporous gold thin films were prepared by dealloying and were completely crack-free, with a continuous ligament network across grain boundaries. Film stress increases during dealloying, and thermal cycling causes thermoelastic deformation. Ligament width coarsens during cycling to 200 °C, but at higher temperatures the porous structure densifies. The stability of nanoporous films may also depend on film thickness. From the biaxial film stress, the equivalent yield strength of nanoporous gold was calculated to be at least 1.8 GPa.

AB - Nanoporous gold thin films were prepared by dealloying and were completely crack-free, with a continuous ligament network across grain boundaries. Film stress increases during dealloying, and thermal cycling causes thermoelastic deformation. Ligament width coarsens during cycling to 200 °C, but at higher temperatures the porous structure densifies. The stability of nanoporous films may also depend on film thickness. From the biaxial film stress, the equivalent yield strength of nanoporous gold was calculated to be at least 1.8 GPa.

KW - Dealloying

KW - Gold

KW - Nanoporous

KW - Thin film

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ER -

Microstructure, stability and thermomechanical behavior of crack-free thin films of nanoporous gold

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

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