Abstract
Nepenthes pitcher-inspired slippery surface provides an alternative strategy to overcome the shortcomings of the current superhydrophobic surfaces such as thermal–mechanical stability and functional durability. Herein, we fabricate a lubricant-infused slippery surface (LISS) through micro-nano structure building, low surface energy molecular grafting and perfluoropolyethers (PFPE) lubricant oil infusion. The surface morphologies, chemical compositions, wettability, dynamic liquids movement, self-cleaning, anti-corrosion behavior, and thermal–mechanical stability were investigated and analyzed. The electrochemical impedance spectroscopy (EIS) results reveal that the fabricated LISS exhibits enhanced Rct and |Z|0.01Hz values with 2 orders of magnitude higher even after 30 days immersion, demonstrating outstanding long-lasting anti-corrosion properties. Besides, the LISS also exhibits superior capacities of hot water repellency (∼90 °C water droplets) and scratching resistance. We believe these results have significant implications for understanding the design and multi-functional applications of biomimetic liquid-infused slippery materials.
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