Fig. 3. Dew harvesting experiments.
(A) Qualitative images of dew harvesting under direct solar radiation. (B) Dew formation under solar irradiation, 90 min after the emitter is exposed to various (95 to 65%) levels of constant RH. (C) Dew mass flux and solar irradiation over 24 hours at RH > 90%. (D) Mean dew mass flux and mean irradiation for five experimental runs, demonstrating broad operational capability. More information can be found in table S1. Photo credit: Tobias Gulich, ETH Zurich.