| Abstract Scope |
This talk highlights our recent advances in ultrawhite and colored radiative cooling paints and elastomeric coatings formulated from optimized pigments including CaCO3, BaSO4, and hBN nanoparticles and polymer binders including acrylic and silicone. These coatings achieve record-high solar reflectance and sky-window emissivity, cool surfaces by up to 4.5 °C below ambient in daytime, and deliver over 100 W/m2 of cooling power. Their cost effectiveness, durability and environmental friendliness point to substantial energy saving potential for building and transportation applications. Currently, large paint companies and several startup companies, including one founded by the speaker, are pursing commercialization of these novel radiative cooling paints and coatings. |