This article investigates both theoretically and numerically a novel mechanism of bubble detachment by an electrowetting-driven interfacial wave, inspired by droplet control and manipulation via electrowetting. Electrowetting-on-dielectric can be used to modulate the contact point movement at the water-air interface in a thin liquid film. Rapid oscillation of the contact line is achieved by a swift change of voltage under an AC signal. When disturbed with such contact angle changes, the interfacial wave between two immiscible fluids disrupts bubble dynamics. Numerical modeling reveals that an air bubble on a hydrophobic surface can be detached by the trough of such a wave. The frequency of the interfacial wave is twice the voltage frequency. A higher voltage frequency leads to a smaller amplitude and higher celerity of the wave, while a lower voltage frequency leads to a larger wave amplitude and lower celerity. The bubble can easily detach when the voltage frequency is 10 Hz. However, the bubble fails to...

中文翻译：

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电润湿驱动界面波辅助气泡脱离

受电润湿液滴控制和操纵的启发，本文从理论上和数值上研究了一种由电润湿驱动的界面波引起的气泡脱离的新机制。电介质上的电润湿可用于调节薄液膜中水-空气界面处的接触点运动。接触线的快速振荡是通过交流信号下电压的快速变化来实现的。当受到这种接触角变化的干扰时，两种不混溶流体之间的界面波会破坏气泡动力学。数值模拟表明，疏水表面上的气泡可以通过这种波的波谷分离。界面波的频率是电压频率的两倍。较高的电压频率导致波的幅度较小和速度较高，而较低的电压频率导致较大的波幅和较低的速度。当电压频率为 10 Hz 时，气泡很容易脱落。然而，泡沫并没有...