Fig. 2
From: Colloidal inorganic nano- and microparticles for passive daytime radiative cooling
Copyright 2017, Elsevier. b Conceptual description of particle-based PDRC films. c Outdoor temperature profiles of SiO2 MP films and a commercial paint relative to ambient temperature. Reproduced with permission from [56]. Copyright 2018, American Chemical Society. d Schematic of nanoporous PE film doped with SiO2 NPs for PDRC, and e its temperature profile under solar irradiation. Reproduced with permission from [62]. Copyright 2021, American Chemical Society. f Top and g cross-sectional SEM images, and h photograph of RC paint on glass substrate. i Temperature profiles of commercial CW paint, RC paint, and ambient temperature in the daytime. Reproduced with permission from [52]. Copyright 2021, Elsevier
a PDRC films without a metal reflective layer. Schematic of a PDRC film composed of a particle-embedded double-layer coating. Reproduced with permission from [69].