Femtosecond laser-induced shape memory polymer micropillar with tunable wettability and reversible adhesion for underwater oil droplet lossless transfer

被引:25
作者
Jiao, Yunlong [1 ]
Li, Chuanzong [2 ]
Ji, Jiawei [1 ]
Wang, Zhaochang [1 ]
Tao, Tongtong [1 ]
Zhang, Tao [1 ]
Liu, Kun [1 ]
机构
[1] Hefei Univ Technol, Inst Tribol, Hefei 230009, Peoples R China
[2] Hefei Univ Technol, Sch Instrument Sci & Optoelect Engn, Hefei 230009, Peoples R China
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
D O I
10.1063/5.0040990
中图分类号
O59 [应用物理学];
学科分类号
摘要
Shape memory polymers (SMPs) with tunable wettability and reversible adhesion through adjusting the surface morphology have great prospects in functional devices. However, current functional devices based on SMPs are mainly concentrated on the manipulation of diverse liquid droplets in the air; it is still a challenge to achieve the reversible tuning of underwater oil wettability and adhesion on the microstructured SMP surface. Herein, we fabricate a kind of SMP micropillar array through one-step femtosecond laser irradiation, which could achieve the reversible tuning of underwater oil wettability and adhesion between the tilted and upright states. It is worth noting that the deformed micropillar arrays show underwater oleophobicity and have a larger adhesion force to the oil droplet than that of upright micropillar arrays, which is mainly related to the variation of the contact area between the oil droplet and the micropillar array. Finally, we demonstrate the lossless oil droplet transfer underwater by using the micropillar array surface with different states. We believe the present work will bring some insights for researchers in the field of dynamically responsive tunable underwater oil droplet manipulation.
引用
收藏
页数:6
相关论文
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