A radar-infrared compatible stealth metamaterial with high-temperature resistance

Abstract In this work, a multilayer metamaterial with integrated radar and infrared (IR) stealth capabilities was developed. The dielectric layer was constructed using a silicon carbide nanowire (SiC nws ) composite, providing both strong electromagnetic wave absorption and excellent thermal resistance. Thermogravimetric analysis revealed minimal mass loss below 750 °C, indicating the material’s stability in high-temperature environments. Additionally, the metamaterial exhibited a reflection loss lower than −10 dB throughout the 2.42–30 GHz range, corresponding to an absorption efficiency above 90%. The synergy between the frequency selective surface resonance and the SiC nws layer’s thermal insulation and IR shielding properties enabled effective dual-band stealth performance. These results suggest that the proposed metamaterial is highly suitable for advanced defense applications, such as stealth coatings on jet engine exhaust systems in military aircraft.