We use large-scale molecular dynamics to study the dynamics at the three-phase contact line in electrowetting of water and electrolytes on no-slip substrates. Under the applied electrostatic potential the line friction at the contact line is diminished. The effect is consistent for droplets of different sizes as well as for both pure water and electrolyte solution droplets. We analyze the electric field at the contact line to show how it assists ions and dipolar molecules to advance the contact line. Without an electric field, the interaction between a substrate and a liquid has a very short range, mostly affecting the bottom, immobilized layer of liquid molecules which leads to high friction since mobile molecules are not pulled towards the surface. In electrowetting, the electric field attracts charged and polar molecules over a longer range, which diminishes the friction.

中文翻译：

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电润湿可减少分子润湿中的接触线摩擦

我们使用大型分子动力学研究在防滑基底上水和电解质的电润湿中三相接触线的动力学。在施加的静电势下，接触线处的线摩擦减小。对于不同大小的液滴以及纯净水和电解质溶液液滴，效果都是一致的。我们分析了接触线处的电场，以显示它如何帮助离子和偶极分子推进接触线。在没有电场的情况下，基材和液体之间的相互作用范围非常短，主要影响固定的液体分子底部固定层，这导致高摩擦，因为移动分子没有被拉向表面。在电润湿中，电场在更长的范围内吸引带电分子和极性分子，