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Kim, Ju-Young
Robust Multifunctional Materials Lab
Research Interests
  • Flexible / stretchable devices, nano-mechanics, nanoporous metal, materials reliability

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Microstructure evolution in nanoporous gold thin films made from sputter-deposited precursors

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Title
Microstructure evolution in nanoporous gold thin films made from sputter-deposited precursors
Author
Gwak, Eun-JiKang, Na-RiBaek, Un BongLee, Hae MooNahm, Seung HoonKim, Ju-Young
Keywords
Nanoporous gold; Porous material; Sputtering; Surface diffusion; Thin films
Issue Date
201311
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
SCRIPTA MATERIALIA, v.69, no.10, pp.720 - 723
Abstract
We fabricate almost crack-free 1.5 μm thick nanoporous gold thin films using free-corrosion dealloying and transfer processes from sputter-deposited precursors. By controlling the temperature and the concentration of the nitric acid solution during free-corrosion dealloying, we obtain ligament sizes in nanoporous gold between 22 and 155 nm. We investigate the effects of dissolution rate of Ag atoms, surface diffusivity of Au atoms and formation of Ag oxide on nanoporosity evolution.
URI
http://scholarworks.unist.ac.kr/handle/201301/3888
DOI
http://dx.doi.org/10.1016/j.scriptamat.2013.08.010
ISSN
1359-6462
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MSE_Journal Papers

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