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prof Shanhui Fan

Shanhui Fan embeds Fabric with Nanoparticles to Block 95% of Sunlight

Summary

The fabric stays 3.5C cooler than the air around it, and can be 12.5C cooler than cotton when worn.

Nov
2021

Professor Shanhui Fan and colleagues have modified silk to reflect 95% of sunlight, helping to keep the wearer cooler than other fabrics. 

They were able to engineer the silk fabric by embedding the fibers with aluminium oxide nanoparticles that reflect the ultraviolet wavelengths of sunlight.

The researchers found that the fabric stayed 3.5°C cooler than the surrounding air because of its ability to reflect most sunlight and radiate heat. It is the first fabric to be developed that stays colder than the surrounding air when in sunlight.

Shanhui says the fabric is mainly designed to keep people cool when they are outdoors and exposed to sun, rather than in indoor settings like homes and office buildings.

 

Scientists have been searching for passive ways of cooling us that don’t require electricity in order to help reduce demands on energy. Approximately 15% of global electricity goes towards keeping us cool. 

 

Journal reference: Nature Nanotechnology, DOI: 10.1038/s41565-021-00987-0

 

Excerpted from

Published : Jun 30th, 2022 at 12:18 pm
Updated : Jul 12th, 2022 at 01:18 pm