Extended Data Fig. 3: Optical properties of the solar umbrella.
From: Enhanced solar evaporation using a photo-thermal umbrella for wastewater management
(a) Reflectance of the selective absorber (TiNOXenergy, Almeco) and black paint emitter measured using an FTIR. (b) Structure of the solar umbrella comprising a selective solar absorber coated on the top surface of an aluminum substrate and a black paint sprayed on to the bottom surface.
