Re-entrant structure and low interface energy are helpful to obtain superamphiphobicity on metal surface. In this paper, a novel combined laser-electrochemistry process is proposed to prepare hierarchical micro-nano re-entrant structure on metal surface of copper. This method mainly consists of picosecond laser ablation, electropolishing and electrodeposition. The “top-down” and “bottom-up" processing strategies are combined to realize the controllable morphology of re-entrant structure. Afterward, the structure is modified by low surface energy materials to obtain superamphiphobicity. The measurement shows that the static contact angle (CA) of water and rapeseed oil droplet on metal surface prepared by this process are more than 150° and and sliding angle (SA) are all less than 10°. The outstanding durability in the low temperature test and phenomenon of that droplet could move along inclined surface against gravity demonstrating good superamphiphobicity.

凹入结构和低界面能有助于在金属表面获得超疏水性。本文提出了一种新颖的激光-电化学结合工艺，以在铜的金属表面上制备分级的微纳米凹腔结构。该方法主要包括皮秒激光烧蚀，电抛光和电沉积。结合“自上而下”和“自下而上”的加工策略，实现了可重入结构的可控形貌，然后通过低表面能材料对结构进行改性，获得了超疏水性，测量结果表明静态接触角通过该方法制备的金属表面上的水和菜籽油滴的（CA）大于150°，并且滑动角（SA）均小于10°。