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Intermediate Structures of Nucleation and Growth during Solidification of CuO Constrained by Graphene

机译：石墨烯受约束的Cuo凝固过程中的中间结构

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摘要

Important solid-state information regarding solidification remains unknown, such as the intermediate structure before nucleation and precipitation pathways for each component in multicomponent materials during crystal growth. Herein, a unique intermediate structure with unequal lattice structure (the main performance is the curved lattice fringes and the unequal interplanar spacing) is observed in situ at the atomic level before CuO nucleation. The results of experiments and molecular dynamics simulations indicate that the formation of this intermediate may be due to the irregular agglomeration of Cu and O atoms. During growth, Cu-Cu layers repeatedly form at the solid-liquid interface as an intermediate state, then oxidizes, and finally forms a perfect CuO crystal. These results help to reveal the mystery of nucleation nanomaterials, especially the multicomponent materials, and elucidate microscopic crystal growth mechanisms during multicomponent materials solidification.
机译：关于凝固的重要固态信息仍然是未知的，例如在晶体生长期间多组分材料中的每种组分的成核和沉淀途径之前的中间结构。 这里，在CuO成核之前，在原子水平原位观察到具有不等晶格结构的独特中间结构（主要性能是弯曲的格子条纹，并且不等平板间隔）。 实验结果和分子动力学模拟表明该中间体的形成可能是由于Cu和O原子的不规则附聚。 在生长期间，Cu-Cu层在固液界面中反复形成作为中间状态，然后氧化，最终形成完美的CuO晶体。 这些结果有助于揭示成核纳米材料，尤其是多组分材料的谜团，并在多组分材料凝固过程中阐明微观晶体生长机制。

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  • 来源
    《Advanced materials interfaces》 |2020年第7期|共5页
  • 作者

    Ge Mengke; Yuan Wenjuan; Zhou Lingling; Deng Ziliang; Hu Min; Li Xiang; He Jia; Xi Wei; Luo Jun;

  • 作者单位

    Tianjin Univ Technol Inst New Energy Mat &

    Low Carbon Technol Sch Mat Sci &

    Engn Ctr Electron Microscopy Tianjin 300384 Peoples R China;

    Tianjin Univ Technol Inst New Energy Mat &

    Low Carbon Technol Sch Mat Sci &

    Engn Ctr Electron Microscopy Tianjin 300384 Peoples R China;

    Chinese Acad Sci Inst Mech State Key Lab Nonlinear Mech Beijing 100190 Peoples R China;

    Tianjin Univ Technol Inst New Energy Mat &

    Low Carbon Technol Sch Mat Sci &

    Engn Ctr Electron Microscopy Tianjin 300384 Peoples R China;

    Tianjin Univ Technol Inst New Energy Mat &

    Low Carbon Technol Sch Mat Sci &

    Engn Ctr Electron Microscopy Tianjin 300384 Peoples R China;

    Tianjin Univ Technol Inst New Energy Mat &

    Low Carbon Technol Sch Mat Sci &

    Engn Ctr Electron Microscopy Tianjin 300384 Peoples R China;

    Tianjin Univ Technol Inst New Energy Mat &

    Low Carbon Technol Sch Mat Sci &

    Engn Ctr Electron Microscopy Tianjin 300384 Peoples R China;

    Tianjin Univ Technol Inst New Energy Mat &

    Low Carbon Technol Sch Mat Sci &

    Engn Ctr Electron Microscopy Tianjin 300384 Peoples R China;

    Tianjin Univ Technol Inst New Energy Mat &

    Low Carbon Technol Sch Mat Sci &

    Engn Ctr Electron Microscopy Tianjin 300384 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    CuO; intermediate structures; nucleation; solidification;

    机译：CUO;中间结构;成核;凝固;

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