论文标题
乳液液滴的刻面和扁平：机械模型
Faceting and flattening of emulsion droplets: a mechanical model
论文作者
论文摘要
冷却时，已经观察到，已经观察到通过烷烃分子的冷冻界面和表面活性剂稳定的乳液液滴会经历壮观的形态转化序列：从球体到刻面的ICOSAHEDRA，再到扁平的液态液血液。尽管通常归因于冷冻界面的弹性与表面张力之间的相互作用，但尽管近年来提出了不同的理论图片，但基于这些过渡的物理机制仍然难以捉摸。在本文中，我们介绍了一个综合的变形乳液液滴的机械模型，该模型定量解释了各种实验观察，包括刻面过渡的缩放行为。我们的分析强调了重力和冷冻界面的自发曲率在确定特定过渡途径中的作用。
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 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 article, we introduce a comprehensive mechanical model of morphing emulsion droplets, which quantitatively accounts for various experimental observations, including the 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.
