Fig. 5

a Schematic illustration of the synthesis of fluorosilane-coated silica nanoparticles, F-SiO₂ NP; b optical photograph of water droplets (>10 μL) on F-SiO2 NP-coated polyester fabric. A small amount of dimethyl methylene blue dye was dissolved in water for illustration purpose. Reprinted with permission from [80]. Copyright (2012) American Chemical Society