An Efficient Fog Collector Achieved by Optimal Hierarchical Surface Patterns and Wetting Gradient

With the decrease in fresh water resources, fog collection has become a promising way to obtain water. This paper presents an efficient collector that combines wettability and spokes geometry. Water droplets move along fixed route on mist can easily overcome pinning effect at end of structure detach from surface then be collected. Its collecting efficiency 1.82 times planar zinc sheet, which provides new idea for design subsequent collectors.