🏠 Paint-like coating keeps roofs cool while harvesting water from the air
💧 A team from the University of Sydney and materials science start-up Dewpoint Innovations have developed a nanoengineered polymer coating that, when applied to a roof, passively cools the building and captures water directly from the air – without the need for any energy input.
💬 Professor Chiara Neto from the University of Sydney Nano Institute and School of Chemistry, said: “This technology not only advances the science of cool roof coatings but also opens the door to sustainable, low-cost and decentralised sources of fresh water – a critical need in the face of climate change and growing water scarcity.”
💬 Ming Chiu, chief technology officer at Dewpoint Innovations, said: “By removing UV-absorbing materials, we overcome the traditional limit in solar reflectivity while avoiding glare through diffuse reflection. This balance between performance and visual comfort makes it easier to integrate and is more appealing for real-world applications.”
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📸 Image credit: The University of Sydney