基于荷叶表面“自清洁效应”的超疏水表面是结构化功能表面研究的前沿和热点之一，在自清洁、抗结冰和油水分离等方面具有广阔的应用前景，但是，超疏水表面Cassie-Baxter(CB)状态稳定性(即自清洁效应的稳定性)不足的问题一直是限制超疏水表面广泛商业应用的关键，也是目前亟需解决的国际难题之一。本项目针对超疏水表面对CB状态稳定性的应用需求，研究将超快激光与液相沉积法相结合的超疏水表面微纳结构复合制备新方法，突破单一制备方法对纳米或微米结构调控困难等问题，开发一类新的具有“纳-亚微-微”三级结构复杂性、架构可控性和较强CB状态稳定性的多维多尺度金属氧化物微纳结构体系；通过结合理论分析和实验研究，探索微纳多级结构的形貌特征与CB状态稳定性之间的关系，揭示预制微纳结构在金属氧化物纳米和亚微米结构原位生长过程中的作用机理，并探索高稳定性超疏水表面的应用潜能，为超疏水表面走向实际应用奠定一定的基础。

Based on the “self-cleaning effect” of lotus leaves, superhydrophobic surfaces have been one of the frontiers and focuses in the field of structuring fictional surfaces and are promising candidates in many potential applications like self-cleaning, anti-icing and oil-water separation et al. However, the insufficient CB state stability of superhydrophobic surfaces has been the key problem constraining the commercialized use of superhydrophobic surfaces and also is one of the international difficulties needed to be solved urgently. To meet the requirement of high Cassie-Baxter (CB) state stability for superhydrophobic surface applications, a new hybrid method combining ultrafast laser and liquid-phase deposition was proposed and a new type of metal oxide superhydrophobic surface micro/nano-structures with “nano-submicro-micro” triple-scale structural complexity and excellent CB state stability was designed. This hybrid method overcomes the problems of the poor tunability of ultrafast laser for nanostructures and liquid-phase deposition for micro-structures, leading to the integrated manufacturing and effective tunability of the as-prepared multi-dimension and multi-scale structures. By both theoretic study and experimental analysis, the relationship between the morphology features and CB state stability will be investigated, the mechanism and influence of the precursor micro/nanostructures on the in-situ growth process of metal oxide nano- and submicro-structures will be revealed and the application potential of the prepared metal-oxide superhydrophobic surfaces will also be explored. This project could provide new strategy and theoretical basis for superhydrophobic surface preparation.