Thermomechanical properties of gold nanowires supported on a flexible substrate

Diffusion-controlled deformation mechanisms may become relevant for nanocrystalline and nanostructured materials at room temperature. In this paper, the stress–strain behavior of gold nanowires 40 nm wide, 20 nm high and 1 mm long on a flexible substrate was investigated in the temperature range of...

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Bibliographic Details
Published in:Scripta materialia 2009-03, Vol.60 (5), p.273-276
Main Authors: Olliges, Sven, Frank, Stephan, Gruber, Patric A., Auzelyte, Vaida, Kunze, Karsten, Solak, Harun H., Spolenak, Ralph
Format: Article
Language:English
Subjects:
Diffusion
Diffusional creep
Gold
Gold nanolines
Nanocrystals
Nanostructured materials
Nanowires
Stress-strain relationships
Surface chemistry
Temperature
Yield Strength
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Summary:Diffusion-controlled deformation mechanisms may become relevant for nanocrystalline and nanostructured materials at room temperature. In this paper, the stress–strain behavior of gold nanowires 40 nm wide, 20 nm high and 1 mm long on a flexible substrate was investigated in the temperature range of 173–393 K. For decreasing temperatures, the yield strength and the fracture resistance increase. Both can be qualitatively explained by diffusion-driven deformation. The activation energy at room temperature indicates diffusion on (1 1 1) surfaces.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2008.08.046