Extreme-wettability-patterned surfaces have attracted great attention due to their excellent application prospects for liquid manipulation. However, developing a simple and universal method to fabricate wettability patterns on a variety of metals remains a great challenge. In this work, three specific preparation approaches were developed to fabricate wettability patterns on copper substrates using chemical processing combined with mask technology. Surface wettability can be suitably controlled by changing the solution concentration and immersion time. The surface has good stability and low pollution under external action. The three preparation methods have differences in preparation process, wettability and mask function. On the basis of these approaches, various complex wettability patterns could be prepared on different metal substrates using designed masks. Furthermore, various wettability-patterned surfaces were successfully fabricated for liquid manipulation applications, such as controlling the fluid shape and water transport. The methods proposed are expected to have promising application potential in patternable printing, water collection and heat-dissipation devices.

中文翻译：

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在金属基板上制作润湿性图案的简便方法

极端润湿性图案化表面因其在液体操作方面的出色应用前景而备受关注。然而，开发一种简单且通用的方法来在各种金属上制造润湿性图案仍然是一个巨大的挑战。在这项工作中，开发了三种特定的制备方法，使用化学处理结合掩模技术在铜基板上制造润湿性图案。可以通过改变溶液浓度和浸入时间来适当地控制表面润湿性。表面在外力作用下稳定性好，污染小。三种制备方法在制备工艺、润湿性和面膜功能等方面存在差异。在这些方法的基础上，使用设计的掩模可以在不同的金属基板上制备各种复杂的润湿性图案。此外，还成功地制造了各种润湿性图案化表面用于液体操作应用，例如控制流体形状和水传输。所提出的方法有望在图案化印刷、集水和散热设备方面具有广阔的应用潜力。