| Abstract Scope |
In recent years, passive radiative cooling (PRC) has gained increasing attention as a sustainable way to cool human environments. The process involves a net radiative heat loss into space by reflecting sunlight (λ~0.3-2.5 μm) and radiating longwave infrared (LWIR, λ~8-13 μm) heat through atmosphere’s optical transmission windows. Of the different classes of radiative cooling materials, ceramics are particularly notable because of their intrinsic solar to thermal infrared (λ~0.3-40 μm) thermal properties. Structured into the right forms, such ceramics can achieve near perfect solar reflectance and broadband thermal emittance/high selective emittance. Along with their robustness, this makes ceramics a highly attractive material platform. In particular, ceramic-based selective emitters may be used to thermoregulate facades, going beyond radiative cooling. This presentation will discuss the history of ceramics as radiative cooling materials, research advances on the design of optically selective ceramics, and emerging research directions in the field. |