Abstract
Radiative heat management for personal comfort using photonic engineered textiles has the potential to provide a substantial advantage for an energy-efficient and sustainable society. Here, we propose a Janus-yarn design approach for a dual-mode double-sided thermoregulating fabric: a passive-radiative-management textile using asymmetric yarn composition, leading to dual-emissivity characteristics. The fabric provides both passive cooling and heating functions, achieved by wearing the textile inside out. The very strong emissivity contrast is achieved by utilizing both metallic and dielectric fibers within the yarn, benefiting from the plasmonic gap on the one hand and Fabry-Perot and multipole localized modes on the other. This tailored combination of reflective and absorptive structures leads to a substantial emissivity asymmetry between the two surfaces of the fabric ( = 0.72). Consequently, the fabric provides a very wide set-point temperature window, with the wearer staying comfortable between 11.3 and .
- Received 6 July 2021
- Revised 14 September 2021
- Accepted 16 September 2021
DOI:https://doi.org/10.1103/PhysRevApplied.16.054013
© 2021 American Physical Society
Physics Subject Headings (PhySH)
Focus
Reversible Fabric Heats and Cools
Published 5 November 2021
A new theory proposes a reversible fabric that could potentially keep a person warm when worn one way and cool when flipped inside out.
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