Fig. 7: Residual liquid droplets in hydrophobic and hydrophilic fog collectors (Reproduced with permission from ref. 77).
From: Sustainable solutions for water scarcity: a review of electrostatic fog harvesting technology
a Droplet contact angle of hydrophobic fog collector. b Image of residual droplets in hydrophobic fog collector. c Droplet contact angle of hydrophilic fog collector. d Image of residual droplets in hydrophilic fog collector. Red circles indicate residual droplets on the fog collector surface clogging the mesh in (b) and residual droplets failing to slide off in (d).
