Abstract：
Micro/nanostructures have garnered significant attention and widespread applications in areas such as photocatalysis, coated fabrics, microchips, and sensors. However, high-resolution and multifunctional micro/nanostructures fabrication remains a great challenge. In this work, a novel self-assembly-femtosecond laser processing for the regular micro squares and nano bumps surface on steel substrates is proposed, and a great potential in the field of anti-icing/de-icing and self-cleaning is demonstrated. The surface tension gradient-driven liquid-air self-assembly provides a silica microsphere monolayer, while the post-femtosecond laser process can give precise micro/nano decoration. We systematically explore the impact of laser repetition frequency, scanning speed, and laser incident power on the size and shape of micro/nano decorations that have been studied. The different performances of self-cleaning effects, ice adhesion, and the photothermal de-icing capability due to the change in surface wettability have been demonstrated. This research shows a new pathway for the creation of smart micro/nanostructures surface which possess stable super hydrophilic and highly adhesive superhydrophobic properties, as well as high abrasion resistance. The discovery achieves a suitable blend of multiple functions on the surface of a single material, which can be applied to various surface engineering fields.
摘要：
微/纳米结构在光催化等领域得到了广泛的关注和应用,涂层织物,微芯片,和传感器。然而,高分辨率和多功能的微/纳米结构制造仍然是一个巨大的挑战。在这项工作中,提出了一种新颖的自组装飞秒激光加工钢衬底上规则的微正方形和纳米凸点表面，证明了在防冰/除冰和自清洁领域的巨大潜力。表面张力梯度驱动的液体-空气自组装提供了二氧化硅微球单层，而飞秒后激光工艺可以给出精确的微/纳米装饰。我们系统地探讨了激光重复频率的影响,扫描速度,和激光入射功率对微/纳米装饰的尺寸和形状的影响进行了研究。自清洁效果的不同表现，冰附着力,并且已经证明了由于表面润湿性的变化而产生的光热除冰能力。这项研究显示了一种新的途径，用于创建具有稳定的超亲水和高度粘附性超疏水特性的智能微/纳米结构表面，以及高耐磨性。该发现在单一材料的表面上实现了多种功能的合适融合，可应用于各种表面工程领域。
