Presolidification in Eutectic Droplets

Bene Poelsema, Zhiguo Zhang, Harold J.W. Zandvliet, Arie Van Houselt*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)
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Abstract

Evidence of presolidification, the counterpart to premelting, is reported. Near the eutectic temperature, TC, the propagation direction of thermal gradient driven motion of eutectic Ge-Pt droplets on Ge(110) is determined by presolidification. Well above TC, the micron-sized droplets move towards the hottest location at the substrate, irrespective of crystalline direction. At 90 K above TC, a strong, unanticipated preference for propagation along the substrate [001] azimuth suddenly emerges, which is attributed to presolidification at the liquid-solid interface. The propagation along [001] is accompanied by a distinct change in shape from compact to elongated along [001].

Original languageEnglish
Article number106201
Number of pages5
JournalPhysical review letters
Volume131
Issue number10
DOIs
Publication statusPublished - 8 Sept 2023

Keywords

  • 2023 OA procedure

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