Hierarchical-morphology metafabric for scalable passive daytime radiative cooling

Incorporating passive radiative cooling structures into personal thermal management technologies could effectively defend humans against intensifying global climate change. Practical application tests demonstrated that a human body covered by our metafabric could be cooled ~4.8°C lower than one covered by commercial cotton fabric.

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

• 1 We show that large-scale woven metafabrics can provide high emissivity (94.5%) in the atmospheric window and high reflectivity (92.4%) in the solar spectrum because of the hierarchical-morphology design of the randomly dispersed scatterers throughout the metafabric.
• 2 Through scalable industrial textile manufacturing routes, our metafabrics exhibit desirable mechanical strength, waterproofness, and breathability for commercial clothing while maintaining efficient radiative cooling ability.
• 3 Practical application tests demonstrated that a human body covered by our metafabric could be cooled ~4.8°C lower than one covered by commercial cotton fabric.

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

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