Temperature-adaptive radiative coating for all-season household thermal regulation

The sky is a natural heat sink that has been extensively used for passive radiative cooling of households. The fabricated temperature-adaptive radiative coating (TARC) optimally absorbs the solar energy and automatically switches thermal emittance from 0.20 for ambient temperatures lower than 15°C to 0.90 for temperatures above 30°C, driven by a photonically amplified metal-insulator transition.

⚡ This is an original paraphrased summary — not copied from the abstract. Full paper available at the source link below.

• 1 A lot of focus has been on maximizing the radiative cooling power of roof coating in the hot daytime using static, cooling-optimized material properties.
• 2 However, the resultant overcooling in cold night or winter times exacerbates the heating cost, especially in climates where heating dominates energy consumption.
• 3 We approached thermal regulation from an all-season perspective by developing a mechanically flexible coating that adapts its thermal emittance to different ambient temperatures.

This work deepens our understanding of the fundamental laws governing the universe, from subatomic particles to cosmic structures.

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