2022/03/30 by Tomohiro Yoshida, Takashi Takeuchi, Yoshida, Tomohiro +3
Engineering · Materials Science · #Advanced Antenna and Metasurface Technologies #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Metamaterials and Metasurfaces Applications #Optics (physics.optics) #Thermal Radiation and Cooling Technologies
paper · pdf · doi:10.48550/arxiv.2203.16046
openalex publication_date 2022/03/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The heat-shielding properties of random metasurface, composed of spherical or spheroidal nanoparticles with random displacements and/or random deformation, were theoretically investigated using the finite difference time domain method. The effective coverage was defined using the total area of nanoparticles in the metasurface, and the robustness of the near-infrared light reflection against randomness was investigated. When the effective coverage was high, the near-infrared light reflection was reduced by at least 20% in both nanoparticle arrangement and shape randomness compared to the hexagonal close-packed perfect metasurface. In contrast, when effective coverage was low, the randomness of the nanoparticle arrangement had almost no effect on the near-infrared light reflection. Furthermore, the near-infrared light reflection performance was improved by the randomness of the nanoparticle shape.