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Tensile Behavior of Free-Standing Gold Films

Published online by Cambridge University Press:  10 February 2011

R.D. Emery ,
D.X. Lenshek ,
B. Behin ,
M. Gherasimova  and
G.L. Povirk
R.D. Emery
Affiliation:
Department of Mechanical Engineering, Yale University, New Haven, CT 06520, gary.povirk@yale.edu
D.X. Lenshek
Affiliation:
Department of Mechanical Engineering, Yale University, New Haven, CT 06520, gary.povirk@yale.edu
B. Behin
Affiliation:
Department of Mechanical Engineering, Yale University, New Haven, CT 06520, gary.povirk@yale.edu
M. Gherasimova
Affiliation:
Department of Mechanical Engineering, Yale University, New Haven, CT 06520, gary.povirk@yale.edu
G.L. Povirk
Affiliation:
Department of Mechanical Engineering, Yale University, New Haven, CT 06520, gary.povirk@yale.edu
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Abstract

A method for tensile testing thin gold films is presented. Free-standing tensile specimens were prepared by evaporating 0.8 μm of gold onto a patterned oxidized silicon wafer. Using common microelectronic fabrication techniques, free-standing thin film specimens were produced that span rectangular windows in the wafer. The wafer was diced into individual tensile specimens composed of a thin film surrounded by a silicon frame. The final step before testing was to cleave the silicon frame so that the load was completely carried by the metal film. The ultimate tensile strength of the films was found to be approximately 150% greater than that of annealed bulk gold. In contrast, the measured elastic modulus for the thin film specimens was approximately the same as that documented for bulk gold.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 472: Symposium I – Polycrystalline Thin Films - Structure, Texture, Properties..III , 1997 , 361
Copyright
Copyright © Materials Research Society 1997

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References

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