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Mechanisms of Coalescence of Metallic Nanodroplets and Sintering of Metallic Nanoparticles

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Abstract

The regularities and mechanisms of coalescence of Au nanodroplets and sintering of solid Au nanoparticles are investigated using molecular dynamics experiments and some theoretical models. It is established that the characteristic time of coalescence τ is proportional to the radius r0 of the original nanodroplets. Both the conclusion and the quantitative estimations of the proportionality coefficient between τ and r0 agree with Frenkel’s theory (1946), yet this theory was proposed for describing the coalescence of macroscopic droplets.

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Funding

This work was supported by the Ministry of Science and Higher Education of the Russian Federation (Tver State University) and in the framework of the state task program in the field of scientific activity for ISMAN RAS (theme 45.5).

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Authors and Affiliations

  1. Tver State University, Tver, Russia

    V. M. Samsonov, I. V. Talyzin & S. A. Vasilyev

  2. Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Moscow oblast, Russia

    S. A. Vasilyev &  M. I. Alymov

Authors
  1. V. M. Samsonov
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  2. I. V. Talyzin
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  3. S. A. Vasilyev
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  4. M. I. Alymov
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Corresponding authors

Correspondence to V. M. Samsonov, I. V. Talyzin, S. A. Vasilyev or M. I. Alymov.

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Translated by E. Oborin

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Samsonov, V.M., Talyzin, I.V., Vasilyev, S.A. et al. Mechanisms of Coalescence of Metallic Nanodroplets and Sintering of Metallic Nanoparticles. Dokl. Phys. 64, 453–455 (2019). https://doi.org/10.1134/S1028335819120061

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  • DOI: https://doi.org/10.1134/S1028335819120061

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