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Mechanism of Coarsening and Bubble Formation in High-Genus Nanoporous Metals
Abstract
Coarsening of crystalline nanoporous metals involves complex changes in topology associated with the reduction of genus via both ligament pinch-off and void bubble formation. Although void bubbles in metals are often associated with vacancy agglomeration, we use large-scale kinetic Monte Carlo simulations to show that both bubble formation and ligament pinch-off are natural results of a surface-diffusion-controlled solid-state Rayleigh instability that controls changes in the topology of the porous material during coarsening. This result is used to find an effective activation energy for coarsening in nanoporous metals that is associated with the reduction of topological genus, and not the reduction of local surface roughness.
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Cites
Electrochemical and Structural Study of a Chemically Dealloyed PtCu Oxygen Reduction Catalyst
Dutta, I., Carpenter, M. K., Balogh, M. P., Ziegelbauer, J. M., Moylan, T. E., Atwan, M. H., & Irish, N. P. (2010) · The Journal of Physical Chemistry C · doi:10.1021/jp106042z · Cited by 121
Cited by
Gan, L., Heggen, M., Rudi, S., & Strasser, P. (2012) · Nano Letters · doi:10.1021/nl302995z · Cited by 366
Size-Dependent Morphology of Dealloyed Bimetallic Catalysts: Linking the Nano to the Macro Scale
Oezaslan, M., Heggen, M., & Strasser, P. (2012) · Journal of the American Chemical Society · doi:10.1021/ja2088162 · Cited by 357
Gan, L., Heggen, M., O’Malley, R., Theobald, B., & Strasser, P. (2013) · Nano Letters · doi:10.1021/nl304488q · Cited by 295
Gan, L., Cui, C., Rudi, S., & Strasser, P. (2014) · Topics in Catalysis · doi:10.1007/s11244-013-0178-z · Cited by 119
Metadata
- Authors
- Erlebacher, J.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2011-06-03
- Volume
- 106
- Issue
- 22
- Pages
- 225504-225504
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2026499296
- Cited by
- 213
- References
- 1
- FWCI
- 4.80
- Type
- journal article
- Language
- en
- Open access
- closed
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