水下拒泡表面的激光结构化处理

Laser Structuring of Underwater Bubble-Repellent Surface.

作者信息

Yang Shuai, Yin Kai, Dong Xinran, He Jun, Duan Ji-An

机构信息

Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China.

The State Key Laboratory of High Performance and Complex Manufacturing, Central South University, Changsha 410083, China.

出版信息

J Nanosci Nanotechnol. 2018 Dec 1;18(12):8381-8385. doi: 10.1166/jnn.2018.16426.

DOI:10.1166/jnn.2018.16426

PMID:30189963

Abstract

Bubbles in aqueous media are pervasive and unavoidable. However, underwater gas bubbles adhesion to the metal pipework can sometimes seriously damage the surface and reduce the useful life of devices. Herein, we report a simple way to fabricate underwater bubble-repellent surface by one-step femtosecond laser direct writing technology. The as-prepared surface exhibits superhydrophilicity in air and superaerophobicity in water, and the bubble contact angles reach 159±2.5° in water. The surface presents ultralow bubble adhesion, and the rolling angle of the bubble is small. The potential mechanism is also discussed. This method offers an easy route to prepare underwater superaerophobic surfaces with ultralow bubble adhesion, and it has potential applications in underwater bubble-repelling facilities.

摘要

水性介质中的气泡普遍存在且不可避免。然而，水下气泡附着在金属管道上有时会严重损坏表面并缩短设备的使用寿命。在此，我们报道了一种通过飞秒激光一步直写技术制备水下拒泡表面的简单方法。所制备的表面在空气中表现出超亲水性，在水中表现出超疏气性，并且在水中气泡接触角达到159±2.5°。该表面具有超低的气泡附着力，且气泡滚动角小。还讨论了潜在的机理。该方法为制备具有超低气泡附着力的水下超疏气表面提供了一条简便途径，并且在水下拒泡设施中具有潜在应用。