Magneto‑Dielectric Synergy and Multiscale Hierarchical Structure Design Enable Flexible Multipurpose Microwave Absorption and Infrared Stealth Compatibility  

作　　者：Chen Li Leilei Liang Baoshan Zhang Yi Yang Guangbin Ji 

机构地区：[1]School of Electronic Science and Engineering,Nanjing University,Nanjing 210093,People’s Republic of China [2]College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第2期401-416,共16页纳微快报（英文版）

基　　金：financial support from the National Nature Science Foundation of China(No.52273247);the National Science and Technology Major Project of China(J2019-VI-0017-0132).

摘　　要：Developing advanced stealth devices to cope with radar-infrared(IR)fusion detection and diverse application scenarios is increasingly demanded,which faces significant challenges due to conflicting microwave and IR cloaking mechanisms and functional integration limitations.Here,we propose a multiscale hierarchical structure design,integrating wrinkled MXene IR shielding layer and flexible Fe_(3)O_(4)@C/PDMS microwave absorption layer.The top wrinkled MXene layer induces the intensive diffuse reflection effect,shielding IR radiation signals while allowing microwave to pass through.Meanwhile,the permeable microwaves are assimilated into the bottom Fe_(3)O_(4)@C/PDMS layer via strong magneto-electric synergy.Through theoretical and experimental optimization,the assembled stealth devices realize a near-perfect stealth capability in both X-band(8–12 GHz)and long-wave infrared(8–14μm)wavelength ranges.Specifically,it delivers a radar cross-section reduction of−20 dB m^(2),a large apparent temperature modulation range(ΔT=70℃),and a low average IR emissivity of 0.35.Additionally,the optimal device demonstrates exceptional curved surface conformability,self-cleaning capability(contact angle≈129°),and abrasion resistance(recovery time≈5 s).This design strategy promotes the development of multispectral stealth technology and reinforces its applicability and durability in complex and hostile environments.

关 键 词：Microwave absorption Radar-infrared compatible stealth Wrinkled MXene Magneto-dielectric synergy MULTIFUNCTION 

分 类 号：TB34[一般工业技术—材料科学与工程]