In this article, we report the measurement of underwater aerophobicity, through the captive-bubble method, for different polymeric coatings employed to protect microscale and nanoscale flexible electronic devices for seawater applications. Controlling the morphology and wettability of the coating, in particular with the incorporation of nanoparticles of fluorinated polymers, allows to adjust the hydrophilic/hydrophobic (aerophobic/aerophilic) character of the surface in order to achieve a more insulating and antibiofouling behavior. Morphological analysis (roughness) and wettability measurements in sessile-drop and captive-bubble methods were provided for some properly selected polymeric coatings. We found that parylene C decorated with poly(vinylidene fluoride) nanoparticles at a higher dispersion concentration (5 mg/mL) exhibits the best compromise between morphology, hydrophobicity, and underwater aerophobicity, with sessile-drop water contact angle of 95.1 ± 2.9° and captive-air-bubble contact angle of 133.1 ± 5.9°.

中文翻译：

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用于水下 MEMS 设备的抗生物污垢涂层的俘获气泡疏气性测量

在本文中，我们报告了通过捕获气泡法测量不同聚合物涂层的水下厌氧性，这些聚合物涂层用于保护海水应用中的微米级和纳米级柔性电子设备。控制涂层的形态和润湿性，特别是通过掺入氟化聚合物的纳米粒子，可以调节表面的亲水/疏水（厌氧/亲氧）特性，以实现更绝缘和抗生物污垢的行为。Morphological analysis (roughness) and wettability measurements in sessile-drop and captive-bubble methods were provided for some properly selected polymeric coatings.