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Contact Line Catch Up by Growing Ice Crystals
Physical Review Letters ( IF 8.1 ) Pub Date : 2022-06-22 , DOI: 10.1103/physrevlett.128.254501
Rodolphe Grivet 1 , Antoine Monier 2 , Axel Huerre 3 , Christophe Josserand 1 , Thomas Séon 2
Affiliation  

The effect of freezing on contact line motion is a scientific challenge in the understanding of the solidification of capillary flows. In this Letter, we experimentally investigate the spreading and freezing of a water droplet on a cold substrate. We demonstrate that solidification stops the spreading because the ice crystals catch up with the advancing contact line. Indeed, we observe the formation and growth of ice crystals along the substrate during the drop spreading, and show that their velocity equals the contact line velocity when the drop stops. Modeling the growth of the crystals, we predict the shape of the crystal front and show that the substrate thermal properties play a major role on the frozen drop radius.

中文翻译:

接触线通过生长冰晶赶上

冻结对接触线运动的影响是理解毛细流动凝固的科学挑战。在这封信中,我们通过实验研究了水滴在冷基板上的扩散和冻结。我们证明了凝固阻止了扩散,因为冰晶赶上了前进的接触线。事实上,我们观察到冰晶在液滴扩散过程中沿基板的形成和生长,并表明它们的速度等于液滴停止时的接触线速度。对晶体的生长进行建模,我们预测了晶体前沿的形状,并表明基板热特性对冷冻液滴半径起主要作用。
更新日期:2022-06-23
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