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Liquid-like behaviours of metallic glassy nanoparticles at room temperature

Author

Listed:
  • C. R. Cao

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • K. Q. Huang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • J. A. Shi

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • D. N. Zheng

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • W. H. Wang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Songshan Lake Materials Laboratory, Dongguan)

  • L. Gu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • H. Y. Bai

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Songshan Lake Materials Laboratory, Dongguan)

Abstract

Direct atomic-scale observations and measurements on dynamics of amorphous metallic nanoparticles (a-NPs) are challenging owing to the insufficient consciousness to their striking characterizations and the difficulties in technological approaches. In this study, we observe coalescence process of the a-NPs at atomic scale. We measure the viscosity of the a-NPs through the particles coalescence by in situ method. We find that the a-NPs have fast dynamics, and the viscosity of the a-NPs exhibits a power law relationship with size of the a-NPs. The a-NPs with sizes smaller than 3 nm are in a supercooled liquid state and exhibit liquid-like behaviours with a decreased viscosity by four orders of magnitude lower than that of bulk glasses. These results reveal the intrinsic flow characteristics of glasses in low demension, and pave a way to understand the liquid-like behaviours of low dimension glass, and are also of key interest to develop size-controlled nanodevices.

Suggested Citation

  • C. R. Cao & K. Q. Huang & J. A. Shi & D. N. Zheng & W. H. Wang & L. Gu & H. Y. Bai, 2019. "Liquid-like behaviours of metallic glassy nanoparticles at room temperature," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09895-3
    DOI: 10.1038/s41467-019-09895-3
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    Cited by:

    1. Naijia Liu & Sungwoo Sohn & Min Young Na & Gi Hoon Park & Arindam Raj & Guannan Liu & Sebastian A. Kube & Fusen Yuan & Yanhui Liu & Hye Jung Chang & Jan Schroers, 2023. "Size-dependent deformation behavior in nanosized amorphous metals suggesting transition from collective to individual atomic transport," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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