A dual-bioinspired structural design enables highly efficient microwave absorption and thermal insulation in SiC hybrid aerogels

the oxidation temperature, optimal impedance matching and enhanced polarization loss are attained. The SiC aerogel oxidized at 1100 °C exhibits superior microwave absorption, with an effective absorption bandwidth of 5.525 GHz (12.475-18 GHz) at a thickness of only 1.65 mm and a minimum reflection loss of -51.75 dB at 1.45 mm. Simultaneously, the bioinspired multiscale porous architecture effectively suppresses heat conduction, endowing the SiC hybrid aerogel with excellent thermal insulation properties. This work demonstrates that integrating bioinspired structural design with multiscale interface engineering offers an effective strategy for developing high-performance, multifunctional materials with dual-band stealth and thermal protection.