Journal article
On the microstructure of nanoporous gold: an X-ray diffraction study.
- Van Petegem S Paul Scherrer Institut, CH-5232 Villigen, Switzerland.
- Brandstetter S
- Hodge AM
- El-Dasher BS
- Biener J
- Schmitt B
- Borca C
- Van Swygenhoven H
- 2009-02-06
Published in:
- Nano letters. - 2009
English
The evolution of the grain structure, internal strain, and the lattice misorientations of nanoporous gold during dealloying of bulk (3D) Ag-Au alloy samples was studied by various in situ and ex situ X-ray diffraction techniques including powder and Laue diffraction. The experiments reveal that the dealloying process preserves the original crystallographic structure but leads to a small spread in orientations within individual grains. Initially, most grains develop in-plane tensile stresses, which are partly released during further dealloying. Simultaneously, the feature size of the developing nanoporous structure increases with increasing dealloying time. Finally, microdiffraction experiments on dealloyed micron-sized nanoporous pillars reveal significant surface damage introduced by focused ion beam milling.
- Language
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- English
- Open access status
- closed
- Identifiers
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- DOI 10.1021/nl803799q
- PMID 19193021
- Persistent URL
- https://sonar.ch/global/documents/278565
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