Cui Hongtao, Teng Chao, Xie Xinyi, Qi Xiaowen
Department of Materials Science, School of Civil Engineering, Qingdao University of Technology, Qingdao, 266520, China.
Discov Nano. 2024 Mar 26;19(1):58. doi: 10.1186/s11671-024-03993-y.
This study presents a technique for processing transparent glass and resin substrates using a low-cost laser marker to create a micro-nano-structured surface with exceptional anti-fog properties. The approach involved depositing an aluminum (Al) film on the transparent substrates as an absorbing layer, followed by rapid laser marker ablation. This ablation process effectively removed the majority of the Al film, resulting in the formation of hierarchical hillock-hollow micro-structures and the dispersion of Al-based nano-particles throughout the surface. The resulting structure on resin glasses demonstrated anti-fog performance even after 629 days storage in the laboratory, which marked the longest antifog record. It exhibited impressive antifog property without visible degradation for the first 9 months, which though degraded substantially afterwards. Furthermore, the micro-nano structure played a key role in reducing the contact angle of the surface. The contact angle experienced a significant reduction from a value of 64° for the control resin to 6.9° for the treated resin, while it was reduced from 44° for the control glass to 0° for the treated glass, indicating superhydrophilicity. This 0° superhydrophilic state persisted for a period of 25 days.
本研究提出了一种使用低成本激光打标机处理透明玻璃和树脂基板的技术，以创建具有卓越防雾性能的微纳结构表面。该方法包括在透明基板上沉积铝（Al）膜作为吸收层，然后进行快速激光打标烧蚀。这种烧蚀过程有效地去除了大部分Al膜，导致形成分级小丘 - 空洞微结构，并使铝基纳米颗粒分散在整个表面。树脂眼镜上形成的结构即使在实验室中储存629天后仍表现出防雾性能，这创下了最长的防雾记录。在最初的9个月里，它表现出令人印象深刻的防雾性能且无明显降解，不过之后降解严重。此外，微纳结构在降低表面接触角方面起到了关键作用。接触角从对照树脂的64°显著降低到处理后树脂的6.9°，而从对照玻璃的44°降低到处理后玻璃的0°，表明具有超亲水性。这种0°超亲水状态持续了25天。
