This new material, called PMMM, is a thin film applied to ordinary glass. Microscopic pyramids etched into its surface are the key to its unique properties.
These tiny pyramids scatter light, giving PMMM a matte appearance. Surprisingly, it transmits much more light than regular glass (95% vs 91%). This allows you to make rooms brighter and more comfortable for people and increase plant growth in greenhouses.
But PMMM’s most interesting feature may be its ability to passively cool buildings. PMMM can keep indoor temperatures up to 6°C cooler than outside by reflecting heat to the outside in the form of infrared radiation.
PMMM film even cleans itself. The pyramidal structure traps air beneath the water droplets, causing the droplets to tumble and carry dust and dirt with them. This “superhydrophobic” property eliminates the need to clean windows.
Source: Ferra
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