Performance and electromagnetic mechanism of radar-and infraredcompatible stealth materials based on photonic crystals  

作　　者：Yanming Liu Xuan Yang Lixin Xuan Weiwei Men Xiao Wu Yuping Duan 

机构地区：[1]AVIC Research Institute for Special Structures of Aeronautical Composite,Ji’nan 250023,China [2]Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows,Ji’nan 250023,China [3]Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province),School of Materials Science and Engineering,Dalian University of Technology,Dalian 116085,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第3期710-717,共8页矿物冶金与材料学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.52071053,U1704253,and 52103334).

摘　　要：Traditional stealth materials do not fulfill the requirements of high absorption for radar waves and low emissivity for infrared waves.Furthermore,they can be detected by various technologies,considerably threatening weapon safety.Therefore,a stealth material compatible with radar and infrared was designed based on the photonic bandgap characteristics of photonic crystals.The radar stealth lay-er(bottom layer)is a composite of carbonyl iron/silicon dioxide/epoxy resin,and the infrared stealth layer(top layer)is a 1D photonic crystal with alternately and periodically stacked germanium and silicon nitride.Through composition optimization and structural adjust-ment,the effective absorption bandwidth of the compatible stealth material with a reflection loss of less than-10 dB has reached 4.95 GHz.The average infrared emissivity of the proposed design is 0.1063,indicating good stealth performance.The theoretical analysis proves that photonic crystals with this structural design can produce infrared waves within the photonic bandgap,achieving high radar wave transmittance and low infrared emissivity.Infrared stealth is achieved without affecting the absorption performance of the radar stealth layer,and the conflict between radar and infrared stealth performance is resolved.This work aims to promote the application of photonic crystals in compatible stealth materials and the development of stealth technology and to provide a design and theoretical found-ation for related experiments and research.

关 键 词：microwave absorption infrared stealth photonic crystal compatible stealth 

分 类 号：TB34[一般工业技术—材料科学与工程]