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Columbia engineers develop pigment-free coating that keptsurfaces 6°C cooler under Arizona sun

TOI Science Desk26 Aug 2026, 08:30 amUpdated 1h ago1 min readWorldWorld

World — TOI Science Desk

Columbia engineers develop pigment-free coating that kept surfaces 6°C cooler under Arizona sun

Columbia Engineering researchers developed a porous polymer coating that can cool surfaces below the surrounding air temperature without using electricity. The coating replaces conventional white pigments with nano-to-microscale air voids that reflect sunlight and release heat towards the sky. Tests showed the surface stayed about 6°C below ambient temperature in Arizona and 3°C below it in Bangladesh.

This report is published with credit to Times of India. The wire sent a summary; open the original for any extra context. Read on Times of India →

Source: Times of India · TOI Science Desk. Published 26 Aug 2026, 08:30 am.

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