Liquid-infused surfaces (LISs) make drops remarkably mobile. However, the dynamics of those drops proved to be subtle, due to the numerous phases at stake (lubricating liquid, drop, solid texture, and air). In this article, we highlight the role played by a feature specific to LISs, namely, the “foot” of oil surrounding the drops and drawn by their surface tension. Consequently, viscous dissipation can be localized in four distinct regions, which we tune independently through various experimental setups. Despite this complexity, we evidence a universal scaling for the friction law and reconcile recent results produced on this topic.

中文翻译：

---

液体灌注材料的摩擦定律的普遍性

液体注入表面（LIS）使液滴明显移动。但是，由于处于多个阶段（润滑液体，液滴，固体质地和空气），这些液滴的动力学被证明是微妙的。在本文中，我们重点介绍了LIS特定功能所扮演的角色，即液滴周围的油的“底脚”并由其表面张力吸引。因此，粘性耗散可以位于四个不同的区域，我们可以通过各种实验设置对其进行独立调整。尽管存在这种复杂性，但我们证明了摩擦定律的普遍适用范围，并调和了有关该主题的最新结果。