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Topology-generating interfacial pattern formation during liquid metal dealloying

Author

Listed:
  • Pierre-Antoine Geslin

    (Northeastern University)

  • Ian McCue

    (Johns Hopkins University)

  • Bernard Gaskey

    (Johns Hopkins University)

  • Jonah Erlebacher

    (Johns Hopkins University)

  • Alain Karma

    (Northeastern University)

Abstract

Liquid metal dealloying has emerged as a novel technique to produce topologically complex nanoporous and nanocomposite structures with ultra-high interfacial area and other unique properties relevant for diverse material applications. This process is empirically known to require the selective dissolution of one element of a multicomponent solid alloy into a liquid metal to obtain desirable structures. However, how structures form is not known. Here we demonstrate, using mesoscale phase-field modelling and experiments, that nano/microstructural pattern formation during dealloying results from the interplay of (i) interfacial spinodal decomposition, forming compositional domain structures enriched in the immiscible element, and (ii) diffusion-coupled growth of the enriched solid phase and the liquid phase into the alloy. We highlight how those two basic mechanisms interact to yield a rich variety of topologically disconnected and connected structures. Moreover, we deduce scaling laws governing microstructural length scales and dealloying kinetics.

Suggested Citation

  • Pierre-Antoine Geslin & Ian McCue & Bernard Gaskey & Jonah Erlebacher & Alain Karma, 2015. "Topology-generating interfacial pattern formation during liquid metal dealloying," Nature Communications, Nature, vol. 6(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9887
    DOI: 10.1038/ncomms9887
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    Cited by:

    1. Longhai Lai & Bernard Gaskey & Alyssa Chuang & Jonah Erlebacher & Alain Karma, 2022. "Topological control of liquid-metal-dealloyed structures," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Yang Yang & Weiyue Zhou & Sheng Yin & Sarah Y. Wang & Qin Yu & Matthew J. Olszta & Ya-Qian Zhang & Steven E. Zeltmann & Mingda Li & Miaomiao Jin & Daniel K. Schreiber & Jim Ciston & M. C. Scott & John, 2023. "One dimensional wormhole corrosion in metals," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    3. Karen L. Xu & Nikolas Caprio & Hooman Fallahi & Mohammad Dehghany & Matthew D. Davidson & Lorielle Laforest & Brian C. H. Cheung & Yuqi Zhang & Mingming Wu & Vivek Shenoy & Lin Han & Robert L. Mauck &, 2024. "Microinterfaces in biopolymer-based bicontinuous hydrogels guide rapid 3D cell migration," Nature Communications, Nature, vol. 15(1), pages 1-17, December.

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