Wettability plays a vital role in fundamental researches and practical applications. Wettability control and patterning have been widely studied in various fields. Although researches have grown rapidly, the methods are still restricted by limitations including complicated processes, high equipment requirements and shortage of methods to treat complex surfaces. Here we report a simple, low cost, array-based wettability control and patterning method via in-situ modification by flexible plasma stamp. Wettability control and patterning on surfaces of superhydrophobic aluminum, superhydrophobic PDMS and silicon, even plant leaf and fruit are achieved. The relationships between the wettability and the treatment time are investigated. We elucidate that the wetting states can also be reversible. The surface modification mechanism of in-situ plasma treatment is further investigated. Utilizing the step by step treatment, gradient and arbitrary wettability patterning on surfaces have been obtained. Notably, the patterned wettability on the inner surface of a tube has been realized, which has never been reported. Finally, in-situ wettability patterning is applied to achieve microfluidics channels on the inner surface of superhydrophobic tube. This work will bring new insights into the study of wetting field and stimulate more applications on wettability control and patterning.

中文翻译：

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各种疏水表面的控制和图案化：通过灵活的大气等离子压模技术实现的原位改性

在基础研究和实际应用中，润湿性起着至关重要的作用。润湿性控制和图案化已在各个领域中被广泛研究。尽管研究发展迅速，但是该方法仍然受到局限性的限制，包括复杂的过程，高设备要求和缺乏处理复杂表面的方法。在这里，我们通过现场报告了一种简单，低成本，基于阵列的润湿性控制和图案化方法通过柔性等离子印章进行修改。在超疏水铝，超疏水PDMS和硅甚至植物的叶子和果实上实现润湿性控制和图案化。研究了润湿性和处理时间之间的关系。我们阐明润湿状态也可以是可逆的。进一步研究了原位等离子体处理的表面改性机理。通过逐步处理，已经在表面上获得了梯度和任意的可湿性图案。值得注意的是，已经实现了在管的内表面上的图案化的润湿性，这从未被报道过。最后，就地应用润湿性图案化以在超疏水管的内表面上实现微流体通道。这项工作将为润湿领域的研究带来新的见解，并刺激在润湿性控制和图案化方面的更多应用。