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Updated: May 10, 2026
Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
High-Entropy Chromate Metafabric for Broadband Infrared Radiative Cooling
Hongyu Guo1,2, Jianyong Yu1,3, Yang Si1,3
1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China.
Abstract:
Radiative cooling, dissipating thermal energy via electromagnetic waves, is the predominant thermal management pathway for the space industry. Developing materials that combine high broadband infrared emissivity, thermal stability, and flexibility represents a desirable yet highly challenging goal. Herein, a metafabric based on high-entropy engineering and a 1D induced shaping strategy for efficient spacecraft cooling is pioneered. Benefiting from the multiplicity absorption mechanisms and ordered structure, the engineered (La0.2Y0.2Nd0.2Gd0.2Sr0.2)CrO3 exhibits inherent thermal stability and broadband infrared emissivity. Building on this feature, the developed (La0.2Y0.2Nd0.2Gd0.2Sr0.2)CrO3 nanofibers demonstrate excellent spectral response and flexibility, enabled by restricted planar infrared scattering and randomly distributed amorphous regions. After weaving them into a fabric-like architecture, the resulting metafabric demonstrates both ultra-high emissivity within a broad IR band, flexibility, exceptional temperature resistance, and structural stability during bending. Theoretical simulations demonstrate that the metafabric exhibits additional cooling properties and a high cooling power compared to conventional cooling systems. These advancements highlight significant potential for efficient cooling in next-generation spacecraft thermal management systems.
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