Hierarchical dual-sized film surface morphologies self-generated from fluorinated binary latex blends boost hydrophobicity and lipophobicity

► Binary latex blends with large particle size ratio for dual-level nanorough films. ► Core-shell particles with two different types of fluorinated shell copolymers. ► Sol-gel reactive comonomer for core-shell compatibility and delayed crosslinking. ► Hierarchical nanostructured surfaces for synergistic enhancement of hydrophobicity.