论文标题
液滴坐在柔软的，拉伸的基材上坐在各向异性上滑动
Droplets sit and slide anisotropically on soft, stretched substrates
论文作者
论文摘要
各向异性润湿底物可以在一系列应用中对液滴行为的有用控制。通常，这些涉及化学或物理对底物表面的构图，或在温度或电场等特性中应用梯度。在这里，我们表明，在液滴如何滑动和静态形状方面，平坦，拉伸，均匀的软底物也表现出不对称的润湿。液滴动力学受拉伸的强烈影响：在平行于与垂直方向相比，在平行于所施加拉伸方向的方向上，在平行于施加拉伸方向的硅胶底物上的甘油液滴在平行于23 \％拉伸幻灯片底物上。与经典润湿理论相反，平衡中的静态液滴显得拉长，定向与拉伸方向平行。两种效应都是由接触线附近的底物诱导的底物变形引起的。
Anisotropically wetting substrates enable useful control of droplet behavior across a range of applications. Usually, these involve chemically or physically patterning the substrate surface, or applying gradients in properties like temperature or electrical field. Here, we show that a flat, stretched, uniform soft substrate also exhibits asymmetric wetting, both in terms of how droplets slide and in their static shape. Droplet dynamics are strongly affected by stretch: glycerol droplets on silicone substrates with a 23\% stretch slide 67\% faster in the direction parallel to the applied stretch than in the perpendicular direction. Contrary to classical wetting theory, static droplets in equilibrium appear elongated, oriented parallel to the stretch direction. Both effects arise from droplet-induced deformations of the substrate near the contact line.
