论文标题
液滴在梯度液体注入表面上的双向运动
Bidirectional Motion of Droplets on Gradient Liquid Infused Surfaces
论文作者
论文摘要
我们证明了在存在地形梯度的情况下，液滴在液体注入表面上的自发双向运动，其中液滴可以向较密集或稀疏的固体分数区域移动。我们的分析理论解释了这种双向运动的起源。此外，使用晶格Boltzmann模拟和实验，我们表明，确定运动方向的关键因素是固体表面和润滑剂膜上的液滴差异。为液滴和润滑剂的各种组合以及不同形式的地形梯度显示了双向运动。
We demonstrate spontaneous bidirectional motion of droplets on liquid infused surfaces in the presence of a topographical gradient, in which the droplets can move either toward the denser or the sparser solid fraction area. Our analytical theory explains the origin of this bidirectional motion. Furthermore, using both lattice Boltzmann simulations and experiments, we show that the key factor determining the direction of motion is the wettability difference of the droplet on the solid surface and on the lubricant film. The bidirectional motion is shown for various combinations of droplets and lubricants, as well as for different forms of topographical gradients.
