This study investigates the design of an effective biomimetic paper-based fog harvesting substrate by examining the harvesting properties of different surfaces, including glass, polyethylene, and superhydrophobic paper. Laboratory-scale fogging tests characterized the wetting behavior of the substrates, emphasizing the importance of the tilt angle relative to the fog flow. Efficient fog harvesting requires both effective droplet accumulation and sufficient but not excessive roll-off. The pinning effect is crucial to prevent small droplets from being carried away by wind but must not fully wet the surface. Coalescence improves droplet roll-off, and superhydrophobic paper is more effective than glass or polyethylene, especially when oriented vertically. Adding glass particles to the superhydrophobic coating enhances pinning and improves fog harvesting efficiency. Water scarcity is severe in many regions due to population growth, agriculture, and climate change. Fog harvesting is a promising solution for water collection, especially in arid and semiarid regions. Biological surfaces, such as those of Namib desert beetles, exhibit heterogeneous wettability patterns that promote water collection. These patterns are mimicked in artificial surfaces to enhance fog harvesting. Superhydrophobic paper, inspired by natural surfaces, is effective for fog harvesting due to its efficient droplet roll-off. Incorporating hydrophilic silica particles into the superhydrophobic coating creates hybrid surfaces with improved fog harvesting properties. The fog harvesting process involves three steps: moisture transport, accumulation, and roll-off. Hydrophilic surfaces promote condensation, while superhydrophobic surfaces facilitate efficient roll-off. Hybrid surfaces combine the advantages of both, enabling droplet pinning and coalescence, which enhances water collection. The study demonstrates that superhydrophobic paper with a 90° tilt angle collects more water than other surfaces. Adding silica particles to the coating improves fog harvesting by promoting coalescence and faster droplet growth. Thermographic experiments show that hybrid surfaces enhance condensation, contributing to water collection. The study concludes that slight but not excessive pinning is optimal for fog harvesting, and hybrid surfaces with controlled particle coverage improve efficiency. The results highlight the potential of paper-based fog harvesting materials for sustainable water collection.This study investigates the design of an effective biomimetic paper-based fog harvesting substrate by examining the harvesting properties of different surfaces, including glass, polyethylene, and superhydrophobic paper. Laboratory-scale fogging tests characterized the wetting behavior of the substrates, emphasizing the importance of the tilt angle relative to the fog flow. Efficient fog harvesting requires both effective droplet accumulation and sufficient but not excessive roll-off. The pinning effect is crucial to prevent small droplets from being carried away by wind but must not fully wet the surface. Coalescence improves droplet roll-off, and superhydrophobic paper is more effective than glass or polyethylene, especially when oriented vertically. Adding glass particles to the superhydrophobic coating enhances pinning and improves fog harvesting efficiency. Water scarcity is severe in many regions due to population growth, agriculture, and climate change. Fog harvesting is a promising solution for water collection, especially in arid and semiarid regions. Biological surfaces, such as those of Namib desert beetles, exhibit heterogeneous wettability patterns that promote water collection. These patterns are mimicked in artificial surfaces to enhance fog harvesting. Superhydrophobic paper, inspired by natural surfaces, is effective for fog harvesting due to its efficient droplet roll-off. Incorporating hydrophilic silica particles into the superhydrophobic coating creates hybrid surfaces with improved fog harvesting properties. The fog harvesting process involves three steps: moisture transport, accumulation, and roll-off. Hydrophilic surfaces promote condensation, while superhydrophobic surfaces facilitate efficient roll-off. Hybrid surfaces combine the advantages of both, enabling droplet pinning and coalescence, which enhances water collection. The study demonstrates that superhydrophobic paper with a 90° tilt angle collects more water than other surfaces. Adding silica particles to the coating improves fog harvesting by promoting coalescence and faster droplet growth. Thermographic experiments show that hybrid surfaces enhance condensation, contributing to water collection. The study concludes that slight but not excessive pinning is optimal for fog harvesting, and hybrid surfaces with controlled particle coverage improve efficiency. The results highlight the potential of paper-based fog harvesting materials for sustainable water collection.