Slide electrification is the spontaneous separation of electric charges at the rear of water drops sliding over solid surfaces. This study delves into how surfaces treated with a low-pressure plasma impact water slide electrification. Ar, O₂, and N₂ plasma treatment reduced the drop charge and contact angles on glass, quartz, and SU-8 coated with 1H,1H,2H,2H-perfluoroctyltrichlorosilane (PFOTS), and polystyrene. Conversely, 64% higher drop charge was achieved using electrode-facing treatment in plasma chamber. Based on the zeta potential, Kelvin potential, and XPS measurements, the plasma effects were attributed to alterations of the topmost layer's chemistry, such as oxidation and etching, and superficially charge deposition. The surface top layer charges were less negative after electrode-facing and more negative after bulk plasma treatment. As a result, the zeta potential was less negative after electrode-facing and more negative after bulk plasma treatment. Although the fluorinated layer was applied after plasma activation, we observed a discernible impact of plasma-glass treatment on drop charging. Plasma surface modification offers a means to adjust drop charges: electrode-facing treatment of the fluorinated layer leads to an enhanced drop charge, while plasma treatment on the substrate prior to fluorination diminishes drop charges, all without affecting contact angles or surface roughness.

滑动起电是指在固体表面上滑动的水滴后部电荷的自发分离。这项研究深入研究了低压等离子体处理的表面如何影响水滑梯带电。 Ar、O ₂和N ₂等离子体处理减少了玻璃、石英和涂有1H,1H,2H,2H-全氟辛基三氯硅烷(PFOTS) 和聚苯乙烯的SU-8 上的液滴电荷和接触角。相反，在等离子体室中使用面向电极的处理可实现 64% 高的液滴电荷。根据 zeta 电位、开尔文电位和 XPS 测量，等离子体效应归因于最顶层化学成分的改变，例如氧化和蚀刻以及表面电荷沉积。面向电极后表面顶层电荷的负电荷较少，而在本体等离子体处理后表面顶层电荷的负电荷较多。因此，在面对电极后，zeta 电位的负值较小，而在本体等离子体处理后，zeta 电位的负值更大。尽管氟化层是在等离子体激活后施加的，但我们观察到等离子体玻璃处理对液滴充电的明显影响。等离子体表面改性提供了一种调节液滴电荷的方法：氟化层的面向电极处理可增强液滴电荷，而氟化之前对基材进行等离子体处理可减少液滴电荷，所有这些都不会影响接触角或表面粗糙度。