中文摘要：

超疏水自清洁荷叶结构表面有重要应用潜力。运用高功率皮秒激光结合高速扫描振镜,在H13模具钢表面高效制备了密排六方点阵微米级凹坑,其中含有丰富的纳米级亚结构,获得了面积为25mm×25mm的反荷叶结构。将该结构用于超疏水微纳米压印模板,在165℃、6MPa、大气环境中进行硅橡胶压印,获得大面积微米级突起阵列,表面分布着纳米级亚结构,与荷叶结构十分相似。压印后硅橡胶表面接触角达到153.3°,接触角滞后值为3.2°,实现了超疏水性。皮秒激光制备的模板能进行连续压印,具有一定的耐久性和连续压印能力。

英文摘要：

The self-cleaning lotus-leaf-like superhydrophobic surfaces are of great importance for various potential applications.Micro craters in hexagonal matrix with nano substructures are effectively fabricated on mold steel（H13）with an area of 25 mm×25 mm by means of a high-power picosecond laser in cooperated with a high-speed galvo scanner.This kind of micro-nano structured H13 surface is used as a micro-nano imprinting master for replicating superhydrophobic silicone rubber surfaces under 165℃,6 MPa in ambient air.Micro protuberances decorated by nano substructures,similar to those of lotus leaf,are formed onto the printed surfaces of silicone rubber,transforming the rubber surfaces to be superhydrophobic with a contact angle of 153.3°and a contact angle hysteresis of 3.2°.The picosecond laser fabricated micro-nano template is capable for repeated imprinting with good durability.