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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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A three-dimensional Monte Carlo model for coarsening kinetics of the bi-continuous system via surface diffusion and its application to nanoporous gold

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Title
A three-dimensional Monte Carlo model for coarsening kinetics of the bi-continuous system via surface diffusion and its application to nanoporous gold
Author
Son, GaeunSon, YoungkyunJeon, HansolKim, Ju-YoungLee, Sukbin
Issue Date
2020-01
Publisher
Acta Materialia Inc
Citation
SCRIPTA MATERIALIA, v.174, pp.33 - 38
Abstract
The coarsening of the two-phase, bi-continuous microstructure via surface diffusion is simulated using a three-dimensional Monte Carlo (MC) model. The coarsening exponent obtained from simulations initially decreases and then saturates at ~4 as the temperature increases. Kinetic analysis on nanoporous gold (np-Au) samples, annealed at 450 and 600 °C, confirms the prediction of the model. The coarsening probability ratio of np-Au between two annealing temperatures, calculated from the reported activation energy for coarsening of np-Au, is comparable to that of the model, signifying that the simulation successfully mimics the kinetic evolution of the thermally coarsened np-Au via surface diffusion.
URI
https://scholarworks.unist.ac.kr/handle/201301/27810
URL
https://www.sciencedirect.com/science/article/pii/S1359646219304919?via%3Dihub
DOI
10.1016/j.scriptamat.2019.08.021
ISSN
1359-6462
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