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Faceting and Flattening of Emulsion Droplets: A Mechanical Model
Physical Review Letters ( IF 8.1 ) Pub Date : 2021-01-21 , DOI: 10.1103/physrevlett.126.038001 Ireth García-Aguilar 1 , Piermarco Fonda 1, 2 , Eli Sloutskin 3 , Luca Giomi 1
Physical Review Letters ( IF 8.1 ) Pub Date : 2021-01-21 , DOI: 10.1103/physrevlett.126.038001 Ireth García-Aguilar 1 , Piermarco Fonda 1, 2 , Eli Sloutskin 3 , Luca Giomi 1
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When cooled down, emulsion droplets stabilized by a frozen interface of alkane molecules and surfactants have been observed to undergo a spectacular sequence of morphological transformations: from spheres to faceted liquid icosahedra, down to flattened liquid platelets. While generally ascribed to the interplay between the elasticity of the frozen interface and surface tension, the physical mechanisms underpinning these transitions have remained elusive, despite different theoretical pictures having been proposed in recent years. In this Letter, we introduce a comprehensive mechanical model of morphing emulsion droplets, which quantitatively accounts for various experimental observations, including the size scaling behavior of the faceting transition. Our analysis highlights the role of gravity and the spontaneous curvature of the frozen interface in determining the specific transition pathway.
中文翻译：
乳液液滴的刻面和展平：机械模型
冷却后，已观察到由烷烃分子和表面活性剂的冷冻界面稳定的乳液液滴会经历一系列壮观的形态转变：从球体到多面液体二十面体，再到扁平液体血小板。虽然通常归因于冻结界面的弹性和表面张力之间的相互作用，但支撑这些转变的物理机制仍然难以捉摸，尽管近年来提出了不同的理论图。在这封信中，我们介绍了变形乳液液滴的综合力学模型，该模型定量地解释了各种实验观察结果，包括刻面转变的尺寸缩放行为。
更新日期：2021-01-21
中文翻译：
乳液液滴的刻面和展平：机械模型
冷却后，已观察到由烷烃分子和表面活性剂的冷冻界面稳定的乳液液滴会经历一系列壮观的形态转变：从球体到多面液体二十面体，再到扁平液体血小板。虽然通常归因于冻结界面的弹性和表面张力之间的相互作用，但支撑这些转变的物理机制仍然难以捉摸，尽管近年来提出了不同的理论图。在这封信中，我们介绍了变形乳液液滴的综合力学模型，该模型定量地解释了各种实验观察结果，包括刻面转变的尺寸缩放行为。
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