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Materials for energy

Materials for energy

Colourful bilayer paint can cool buildings by reflecting sunlight

20 May 2020
Bilayer coating
Cool colours: the hotter square on the left is coated in a single layer of black paint while the cooler square in the right is a black bilayer. (Courtesy: Jyotirmoy Mandal)
A bilayer paint that can dramatically cool sunlit surfaces yet comes in a range of colours has been

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Michael Allen is a science writer based in the UK
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