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Crystallization in small droplets: competition between homogeneous and heterogeneous nucleation
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SYSNO ASEP 0508129 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Crystallization in small droplets: competition between homogeneous and heterogeneous nucleation Author(s) Kožíšek, Zdeněk (FZU-D) RID, ORCID, SAI Number of authors 1 Source Title Journal of Crystal Growth. - : Elsevier - ISSN 0022-0248
Roč. 522, Sep (2019), s. 53-60Number of pages 8 s. Language eng - English Country NL - Netherlands Keywords computer simulation ; nucleation ; growth from melt ; metals Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000475758000009 EID SCOPUS 85067286049 DOI 10.1016/j.jcrysgro.2019.06.007 Annotation Crystals are formed via nucleation and subsequent growth. In many cases, it is not easy to decide if nucleation occurs in the volume (homogeneous nucleation) or on a foreign surface, structure defects etc. (heterogeneous nucleation). This work is focused on crystal nucleation in a small supercooled liquid droplet when nuclei are formed in the volume or on the droplet surface simultaneously. The kinetic equations of homogeneous and heterogeneous nucleation are solved numerically to determine the size distribution of crystal nuclei and nucleation rate of both processes in Ni liquid droplet. The decrease of the number of atoms within the droplet volume in consequence of homogeneous and heterogeneous nucleation is taken into account. The number of nucleation sites on droplet surface decreases as new heterogeneous nuclei are formed. It is shown how both nucleation processes occur simultaneously.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2020 Electronic address https://doi.org/10.1016/j.jcrysgro.2019.06.007
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