A multifunctional stealth technology compatible with infrared and radar is one of the most feasible ways to improve the survival of military equipment under high-temperature conditions. However, it is difficult to effectively integrate multiple functions into one material owing to the contradictory stealth mechanisms of infrared and radar. Herein, the near-room-temperature integrated preparation of a hierarchical metastructure with high-temperature resistance, broadband microwave absorption, and infrared stealth is realized by combining topological optimization of metastructure and a papermaking method. The tailored metastructure exhibits an effective bandwidth and absorption peak of 3.1 GHz and −25.9 dB at 1,000°C. The excellent thermal insulation allows the metastructure to achieve infrared stealth, which can reduce the radiation temperature of an object from 1,200°C to 340°C. The new technology paves the way for the design and preparation of a radar-infrared bi-stealth metastructure applied to high temperature.

与红外和雷达兼容的多功能隐身技术是提高军事装备在高温条件下生存的最可行方法之一。然而，由于红外和雷达的隐身机制相互矛盾，很难将多种功能有效地集成到一种材料中。本文通过元结构拓扑优化与造纸方法相结合，实现了近室温综合制备具有耐高温、宽带微波吸收和红外隐身的多级元结构。定制的元结构在 1,000°C 下表现出 3.1 GHz 和 -25.9 dB 的有效带宽和吸收峰。优异的隔热性使超结构实现红外隐身，可将物体的辐射温度从 1,200°C 降低到 340°C。新技术为设计和制备应用于高温的雷达红外双隐身超结构铺平了道路。