Phyllostachys Viridis-Leaf-like MLMN Surfaces Constructed by Nanosecond Laser Hybridization for Superhydrophobic Antifogging and Anti-Icing.
Phyllostachys Viridis-Leaf-like MLMN Surfaces Constructed by Nanosecond Laser Hybridization for Superhydrophobic Antifogging and Anti-Icing.
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DOI：
10.1021/acsami.3c14083
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发表时间：
2023-11
影响因子：
9.5
通讯作者：
Xiaoming Feng;Jiahui Chu;Guizhong Tian;Zhizhong Wang;Wen Zhou;Xiaowei Zhang;Zhongxu Lian
中科院分区：
文献类型：
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作者：
Xiaoming Feng;Jiahui Chu;Guizhong Tian;Zhizhong Wang;Wen Zhou;Xiaowei Zhang;Zhongxu Lian
在自然界中，许多物种通常会进化出特定的功能表面来抵御恶劣的外部环境。尤其是表面的结构润湿性由于其在防雾和防冰方面的巨大潜力而引起了人们的极大兴趣。毛竹是一种耐低温(-18℃)的植物，具有超疏水性和耐冰性。在本工作中，从具有代表性的耐寒植物叶片中获得灵感，利用超快激光技术在铜衬底上制备了一种独特的多层微纳米(MLMN)表面，该表面具有优异的超疏水特性，其水接触角为>；165°，滚动角为<；2°。在动态润湿实验中，液滴在MLMN表面的回弹效率达到20.6%，接触时间仅为10.6ms。在冷凝实验中，明显观察到雾滴在表面的成核、生长、合并和反弹，表明合理的织构结构可以提高表面的防雾性能。在抗冰实验中，在-10℃下冻结时间延长到921 S，盐水冻结时间达到惊人的1214 S。此外，通过划痕损伤、砂纸磨损和结冰融化循环试验证实了MLMN表面的机械耐久性，并为产品在实际应用中的应用评估了其可修性。最后，还揭示了MLMN表面的防雾/防冰策略。我们预计，这些研究将为设计和制造具有可靠的防雾和防冰性能的多尺度分层结构提供一种很有前途的方法，特别是在与盐水相关的应用中。
In nature, many species commonly evolve specific functional surfaces to withstand harsh external environments. In particular, structured wettability of surfaces has attracted tremendous interest due to its great potential in antifogging and anti-icing properties. Phyllostachys Viridis is a resistant low-temperature (-18 °C) plant with superhydrophobicity and ice resistivity behaviors. In this work, with inspiration from the representative cold-tolerant plants leaves, a unique multilevel micronano (MLMN) surface was fabricated on copper substrate by ultrafast laser process, which exhibited superior superhydrophobic characteristics with the water contact angle > 165° and rolling angle< 2°. In the dynamic wettability experiment, the rebound efficiency of the droplet on the MLMN surface reached 20.6%, and the contact time was only 10.6 ms. In the condensation experiment, the nucleation, growth, merging, and bouncing of fog drops on the surface was distinctly observed, indicating that rational texture structures can improve the antifogging performance of the surface. In the anti-icing experiment, the freezing time was delayed to 921 s at -10 °C, and the freezing time of salt water reached a staggering 1214 s. Moreover, the mechanical durability of MLMN surfaces was confirmed by scratch damage, sandpaper abrasion, and icing and melting cycle tests, and their repairability was evaluated for product applications in practice. Finally, the underlying antifogging/anti-icing strategy of the MLMN surface was also revealed. We anticipate that the investigations offer a promising way to handily design and fabricate multiscale hierarchical structures with reliable antifogging and anti-icing performance, especially in saltwater-related applications.