Dual-mode photonic textiles for radiative heat management

Muluneh G. Abebe; Alice De Corte; Gilles Rosolen; Bjorn Maes

doi:10.1117/12.2620973

24 May 2022 Dual-mode photonic textiles for radiative heat management

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

Proceedings Volume 12150, Photonics for Solar Energy Systems IX; 1215006 (2022) https://doi.org/10.1117/12.2620973
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

Personal radiative heat regulation by photonic engineered textiles can help contribute to a more sustainable cooling and heating energy consumption in buildings by expanding the range of comfortable ambient conditions. Here, we propose various dual-mode photonic fabric designs (dynamic and static) that provide thermal regulation in both cold and hot environments. In the first design, we utilize metal-coated monofilaments arranged in a hexagonal geometry within a yarn and stimuli-responsive polymer actuator beads, in this way benefiting from the infrared (IR) photonic effect (or plasmonic gap) to control the wide-band transmission of thermal radiation and to provide for a sharp, dynamic response (Δτ = 0.9). The second design is based on metal microspheres randomly dispersed in a shape memory polymer membrane. The dynamic switching is achieved via a shape memory polymer matrix that responds to environmental changes. This design capitalizes on the strong scattering properties of metallic microspheres, leading to a strong modulation of reflectance (Δρ = 0.55) as a function of the volume fraction. The third design is a Janus-yarn fabric composed of an asymmetric structure, leading to dual emissivity characteristics. The strong emissivity contrast (Δε = 0.72 ) is achieved by utilizing metallic and dielectric fibers within the yarn; here, static switching is achieved via fabric flipping.

Conference Presentation

Citation Download Citation

Muluneh G. Abebe, Alice De Corte, Gilles Rosolen, and Bjorn Maes "Dual-mode photonic textiles for radiative heat management", Proc. SPIE 12150, Photonics for Solar Energy Systems IX, 1215006 (24 May 2022); https://doi.org/10.1117/12.2620973

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