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Diffusive and martensitic nucleation kinetics in solid-solid transitions of colloidal crystals

Author

Listed:
  • Yi Peng

    (Hong Kong University of Science and Technology)

  • Wei Li

    (Hong Kong University of Science and Technology)

  • Feng Wang

    (Hong Kong University of Science and Technology)

  • Tim Still

    (University of Pennsylvania)

  • Arjun G. Yodh

    (University of Pennsylvania)

  • Yilong Han

    (Hong Kong University of Science and Technology
    The HKUST Shenzhen Research Institute)

Abstract

Solid–solid transitions between crystals follow diffusive nucleation, or various diffusionless transitions, but these kinetics are difficult to predict and observe. Here we observed the rich kinetics of transitions from square lattices to triangular lattices in tunable colloidal thin films with single-particle dynamics by video microscopy. Applying a small pressure gradient in defect-free regions or near dislocations markedly transform the diffusive nucleation with an intermediate-stage liquid into a martensitic generation and oscillation of dislocation pairs followed by a diffusive nucleus growth. This transformation is neither purely diffusive nor purely martensitic as conventionally assumed but a combination thereof, and thus presents new challenges to both theory and the empirical criterion of martensitic transformations. We studied how pressure, density, grain boundary, triple junction and interface coherency affect the nucleus growth, shape and kinetic pathways. These novel microscopic kinetics cast new light on control solid–solid transitions and microstructural evolutions in polycrystals.

Suggested Citation

  • Yi Peng & Wei Li & Feng Wang & Tim Still & Arjun G. Yodh & Yilong Han, 2017. "Diffusive and martensitic nucleation kinetics in solid-solid transitions of colloidal crystals," Nature Communications, Nature, vol. 8(1), pages 1-12, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14978
    DOI: 10.1038/ncomms14978
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    Cited by:

    1. David Doan & John Kulikowski & X. Wendy Gu, 2024. "Direct observation of phase transitions in truncated tetrahedral microparticles under quasi-2D confinement," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    2. Yi Peng & Wei Li & Tim Still & Arjun G. Yodh & Yilong Han, 2023. "In situ observation of coalescence of nuclei in colloidal crystal-crystal transitions," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    3. Menghao Yang & Yunsheng Liu & Yifei Mo, 2023. "Lithium crystallization at solid interfaces," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    4. Shepelev, Igor A. & Soboleva, Elvira G. & Kudreyko, Aleksey A. & Dmitriev, Sergey V., 2024. "Influence of the relative stiffness of second-neighbor interactions on chaotic discrete breathers in a square lattice," Chaos, Solitons & Fractals, Elsevier, vol. 183(C).

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