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The general mechanisms of Cu cluster formation in the processes of condensation from the gas phase

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Abstract

Technological applications of metallic clusters impose very strict requirements for particle size, shape, structure and defect density. Such geometrical characteristics of nanoparticles are mainly determined by the process of their growth. This work represents the basic mechanisms of cluster formation from the gas phase that has been studied on the example of copper. The process of Cu nanoclusters synthesis has been studied by the molecular-dynamics method based on tight-binding potentials. It has been shown that depending on the size and temperature of the initial nanoclusters the process of nanoparticle formation can pass through different basic scenarios. The general conditions of different types of particles formation have been defined and clear dependence of the cluster shape from collision temperature of initial conglomerates has been shown. The simulation results demonstrate a very good agreement with the available experimental data. Thus, it has been shown that depending on the specific application of the synthesized particles or in electronics, where particles of a small size with a spherical shape are required, or in catalytic reactions, where the main factor of effectiveness is the maximum surface area with the help of temperature of the system it is possible to get the realization of a certain frequency of this or that scenario of the shape formation of nanocrystalline particles.

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Acknowledgements

This study was performed within the framework of the State Task of the Ministry of Education and Science of the Russian Federation and supported in part by the Russian Foundation for Basic Research (project no. 13_02_98000_r_sibir’_a).

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Authors and Affiliations

  1. Katanov Khakass State University, Abakan, 655017, Russia

    I V CHEPKASOV, YU YA GAFNER & S L GAFNER

  2. Institute of Theoretical and Applied Mechanics, Novosibirsk, 630090, Russia

    S P BARDAKHANOV

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  1. I V CHEPKASOV
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  2. YU YA GAFNER
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  3. S L GAFNER
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  4. S P BARDAKHANOV
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Correspondence to I V CHEPKASOV.

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CHEPKASOV, I.V., GAFNER, Y.Y., GAFNER, S.L. et al. The general mechanisms of Cu cluster formation in the processes of condensation from the gas phase. Bull Mater Sci 38, 701–706 (2015). https://doi.org/10.1007/s12034-015-0909-9

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  • DOI: https://doi.org/10.1007/s12034-015-0909-9

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