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Hydrophobic/Hydrophilic Cooperative Janus System for Enhancement of Fog Collection
Author(s) -
Cao Moyuan,
Xiao Jiasheng,
Yu Cunming,
Li Kan,
Jiang Lei
Publication year - 2015
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201500647
Subject(s) - janus , materials science , evaporation , nanotechnology , environmental science , chemical engineering , meteorology , engineering , geography
Harvesting micro‐droplets from fog is a promising method for solving global freshwater crisis. Different types of fog collectors have been extensively reported during the last decade. The improvement of fog collection can be attributed to the immediate transportation of harvested water, the effective regeneration of the fog gathering surface, etc. Through learning from the nature's strategy for water preservation, the hydrophobic/hydrophilic cooperative Janus system that achieved reinforced fog collection ability is reported here. Directional delivery of the surface water, decreased re‐evaporation rate of the harvested water, and thinner boundary layer of the collecting surface contribute to the enhancement of collection efficiency. Further designed cylinder Janus collector can facilely achieve a continuous process of efficient collection, directional transportation, and spontaneous preservation of fog water. This Janus fog harvesting system should improve the understanding of micro‐droplet collection system and offer ideas to solve water resource crisis.