Abstract
Superhydrophobic surfaces have attracted considerable interest due to their various functions and wide applications. Most of the existing methods for preparing superhydrophobic surfaces are only applicable to one or several specific substrate materials, which have the disadvantage of substrate-dependent. Here, an approach for the fabrication of substrate-independent superhydrophobic surfaces based on femtosecond laser-chemical hybrid processing is proposed. Micro/nanostructures are constructed on substrates via femtosecond laser direct writing technology, followed by modification with stearic acid. The laser-treated samples coated with stearic acid (LTx-SA, x presents different samples) surfaces have excellent superhydrophobic and self-cleaning properties. Moreover, it is worth noting that the LTx-SA surfaces remain stable superhydrophobicity after heating substrate from 20 °C to 100 °C, washing substrate 10 times, and exposing substrate to air for 60 days. This work provides an efficient and facile strategy for achieving substrate-independent superhydrophobic surfaces.
摘要
超疏水表面因具有多种功能和广泛的应用引起了人们极大的兴趣. 目前制备超疏水表面的方法大多只适用于一种或几种特定的基底材料, 具有依赖基底的缺点. 本文提出了一种基于飞秒激光-化学混合加工制备与基底无关的超疏水表面的方法. 通过飞秒激光直接写入技术在基底上构建出微/纳米结构, 然后用硬脂酸改性. 硬脂酸涂覆激光处理后的样品(LTx-SA, x表示不同的样品)表面具有优异的超疏水和自清洁性能. 此外, 值得注意的是, 将基底从20°C加热到100°C, 或清洗基板10次, 或将基板暴露在空气中60天后, LTx-SA 表面仍然保持稳定的超疏水特性. 这项工作为制备与基底无关的超疏水表面提供了一种有效而简单的策略.
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YIN Kai provided the concept and discussed the results. WENG Wei-xuan and DENG Qin-wen designed and conducted the experiment, edited the manuscript. YANG Peng-yu designed the experiment, discussed the results.
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WENG Wei-xuan, DENG Qin-wen, YANG Peng-yu, and YIN Kai declare that they have no conflict of interest.
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Foundation item: Project(2023YFB4604200) supported by the National Key R&D Program of China; Projects(52222513, 52075557) supported by National Natural Science Foundation of China; Project(2021JJ20067) supported by Natural Science Foundation of Hunan Province, China; Project(2021RC3011) supported by Science and Technology Innovation Program of Hunan Province, China; Project(2023CXQD019) supported by Central South University Innovation-Driven Research Programme, China; Project(ZZYJKT2023-12) supported by State Key Laboratory of Precision Manufacturing for Extreme Service Performance, Central South University, China; Project(IMETKF2024018) supported by the State Key Laboratory of Intelligent Manufacturing Equipment and Technology, Huazhong University of Science and Technology, China
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Weng, Wx., Deng, Qw., Yang, Py. et al. Femtosecond laser-chemical hybrid processing for achieving substrate-independent superhydrophobic surfaces. J. Cent. South Univ. 31, 1–10 (2024). https://doi.org/10.1007/s11771-023-5527-x
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DOI: https://doi.org/10.1007/s11771-023-5527-x