This study investigates the design of effective biomimetic paper-based fog harvesting substrates by examining the wetting behavior and fog harvesting properties of different surfaces, including glass, polyethylene, and superhydrophobic paper. The research highlights the importance of the tilt angle of the surface relative to the fog flow and the role of the pinning effect in preventing the smallest droplets from being carried away by the wind. Superhydrophobic paper is found to be more effective than glass or polyethylene, especially when oriented vertically, due to its efficient droplet roll-off. The addition of glass particles to the superhydrophobic coating is proposed to enhance pinning and improve fog harvesting efficiency. The study concludes that superhydrophobic paper, with its high water droplet roll-off behavior, is a promising material for large-scale fog harvesting applications, offering a sustainable and recyclable solution for water collection in arid regions.This study investigates the design of effective biomimetic paper-based fog harvesting substrates by examining the wetting behavior and fog harvesting properties of different surfaces, including glass, polyethylene, and superhydrophobic paper. The research highlights the importance of the tilt angle of the surface relative to the fog flow and the role of the pinning effect in preventing the smallest droplets from being carried away by the wind. Superhydrophobic paper is found to be more effective than glass or polyethylene, especially when oriented vertically, due to its efficient droplet roll-off. The addition of glass particles to the superhydrophobic coating is proposed to enhance pinning and improve fog harvesting efficiency. The study concludes that superhydrophobic paper, with its high water droplet roll-off behavior, is a promising material for large-scale fog harvesting applications, offering a sustainable and recyclable solution for water collection in arid regions.