Photonic Radiative Cooling
Jump to navigation
Jump to search
Basics
- Radiative Cooling that uses Technology within the Scope of Photonics to optimize their function
- Thus rather than a conventional reflective coating (or lack thereof), PRC coatings are added to enhance not just reflectivity, but also produce significant Black Body Radiation in the Midinfrared, which due to the Atmospheric Infrared Window goes through most of Earth's Atmosphere, essentially using Outer Space as the Heatsink
Methods
Research Level
- Multi-Layered Coatings and Photonic Crystals
- Complex to Fabricate/Apply; Typically similar to Semiconductor Fabrication
- May be of use for applications where reflectivity is inherently not possible, such as in solar cells according to This Paper ( "Radiative cooling of solar absorbers using a visibly transparent photonic crystal thermal blackbody" )
- Barium Sulfate
High TRL Methods
Novel Paint by High Density Pigment using CaCO₃ Microspheres
- This was Pioneered by NightHawkinLight (YouTube Channel)
- Acrylic Paint in Acetone (To add novel drying feature that causes backscattering, akin to why transparent solids (Salt, Sugar, Snow, Plastics, etc) can appear reflective white)
- Calcium Carbonate is Synthesized via Calcium Chlorate (Sometimes sold as Deicing Solid or as a Desiccant) and Sodium Carbonate (often sold as Washing Soda)