High-Temperature Stealth Across Multi-Infrared and Microwave Bands with Efficient Radiative Thermal Management

• Simultaneous stealth across multiple infrared bands (SWIR, MWIR, LWIR) and microwaves at high temperatures (700 °C) is achieved. • At 700 °C, the device features low emissivity of 0.38/0.44/0.60 in MWIR/LWIR/SWIR bands, reflection loss below −3 dB in the X-band (9.6–12 GHz), and high emissivity of 0.82 in the 5–8 μm range. • Under an input power equivalent to Mach 2.2 aerodynamic heating, effective thermal management achieves a 72.4 °C temperature reduction compared to conventional low-emissivity molybdenum. • The proposed strategy integrates an IR-selective emitter and a microwave metasurface, providing comprehensive guidance for high-temperature stealth design.