Multi‐Functional Metasurface: Visibly and RF Transparent, NIR Control and Low Thermal Emissivity

Rapid advances in metamaterial technology are enabling the engineering of wave–matter interactions heretofore not realized and functionalities with potentially far-reaching implications for major challenges fields energy conservation radio frequency (RF) communication. A visibly RF transparent composite metasurface utilizing dielectric–metal spectrally selective coatings high near-infrared control low thermal emissivity is proposed, thus achieving a multi-functional capable enhancing fifth-generation (5G) communication efficiency exhibiting features. The proposed meta-glass yields 92% peak transmission at 30 GHz which corresponds to 20% 90% enhancement when compared plain glass low-emissive substrates. This possesses 86% optical transparency λ = 550 nm, >60% reflection, >80% mid-infrared reflection ≈0.2 emissivity. design highly flexible can be tuned operate over different ranges owing its scalability. study provides better alternative using earth-abundant materials based on indium tin oxide while boosting 5G amenable window systems demanding simultaneous emergent smart/energy-efficient buildings/cities autonomous transportation applications.