Surface with oil–water separation performance has attracted more and more attention in the application of oil-containing wastewater purification. Much related work has been done by many researchers. However, there are still many difficulties in rapid manufacturing of filter membranes with special wettability. In this paper, an efficient, flexible method to fabricate microporous arrays by using a femtosecond (fs) laser combined with a spatial light modulator is proposed. The laser treated copper sheet surface shows hydrophobic and superoleophilic properties due to the microstructure. Meanwhile, the array of micro-through-holes on the surface can allow oil to penetrate through holes and prevent water from penetrating. The manufacturing process is not only extremely efficient, with a 10 × 10 focus array used in the ablation, but also it is without chemical method and the filter presents a long-term stable hydrophobic and superoleophilic performance.

中文翻译：

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空间光调制飞秒激光制造油水分离铜滤芯

具有油水分离性能的表面在含油废水净化的应用中受到越来越多的关注。许多研究人员已经完成了许多相关的工作。然而，快速制造具有特殊润湿性的滤膜仍然存在许多困难。本文提出了一种结合飞秒（fs）激光器和空间光调制器的微孔阵列制造方法。由于微观结构，经激光处理的铜板表面显示出疏水性和超亲油性。同时，表面上的微通孔阵列可以使油渗入孔中并防止水渗透。制造过程不仅效率极高，而且消融中使用了10×10聚焦阵列，