Science· 2021Q1
Hierarchical-morphology metafabric for scalable passive daytime radiative cooling
- 1,082citations
- Q1SCImago
- 2021year
Short summary
A scalable, woven metafabric with hierarchical morphology achieves 94.5% emissivity in the atmospheric window and 92.4% solar reflectivity, enabling ~4.8°C cooling compared to cotton.
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Key points
- Developed a scalable, woven metafabric with hierarchical morphology for passive radiative cooling.
- Achieved high emissivity (94.5%) in the atmospheric window and high solar reflectivity (92.4%).
- Demonstrated ~4.8°C cooling advantage over commercial cotton fabric in practical application tests.
- Metafabrics possess desirable mechanical strength, waterproofness, and breathability for clothing.
AI-generated from the title and abstract; the full text is not read.
Abstract
Incorporating passive radiative cooling structures into personal thermal management technologies could effectively defend humans against intensifying global climate change. 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. Through scalable industrial textile manufacturing routes, our metafabrics exhibit desirable mechanical strength, waterproofness, and breathability for commercial clothing while maintaining efficient radiative cooling ability. 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. The cost-effectiveness and high performance of our metafabrics present substantial advantages for intelligent garments, smart textiles, and passive radiative cooling applications.
The authors' abstract, as published at the source. Science, 2021 · DOI ↗
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Field: Civil and Structural Engineering
Civil and Structural EngineeringEngineering