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Janus-Yarn Fabric for Dual-Mode Radiative Heat Management

Muluneh G. Abebe, Alice De Corte, Gilles Rosolen, and Bjorn Maes
Phys. Rev. Applied 16, 054013 – Published 5 November 2021
Physics logo See Focus story: Reversible Fabric Heats and Cools
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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 (Δε = 0.72). Consequently, the fabric provides a very wide 13.1C set-point temperature window, with the wearer staying comfortable between 11.3 and 24.4C.

  • Figure
  • 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)

Atomic, Molecular & Optical

Focus

Key Image

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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Authors & Affiliations

Muluneh G. Abebe*, Alice De Corte, Gilles Rosolen, and Bjorn Maes

  • Micro- and Nanophotonic Materials Group, Research Institute for Materials Science and Engineering, University of Mons, 20 Place du Parc, Mons B-7000, Belgium

  • *Corresponding author. mulunehgeremew.abebe@umons.ac.be

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Issue

Vol. 16, Iss. 5 — November 2021

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