PEDOT:PSS-patched magnetic graphene films with tunable dielectric genes for electromagnetic interference shielding and infrared stealth  

作　　者：Jin-Cheng Shu Yu-Ze Wang Mao-Sheng Cao 

机构地区：[1]School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Journal of Materials Science & Technology》2024年第19期28-36,共9页材料科学技术（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.52373280,52177014,52273257,51977009 and11774027).

摘　　要：The intelligent era brings electronics closer to humans,but also produces a large scale of electromag-netic(EM)radiation simultaneously,which causes serious harm to health and high sophisticated equip-ment.Exploring the underlying response logic of EM materials is urgently needed to face the challenge of EM interference(EMI)and secondary EM pollution better.Herein,PEDOT:PSS-patched magnetic graphene films are fabricated by vacuum-assisted molecular patching engineering,with tunable EM wave response.Based on the observation of micro-nano structure,the dielectric genes are visually revealed,which offers a bran-new horizon for the optimization of EM properties.Impressively,the constructed films achieve double band shielding toward gigahertz wave and infrared radiation.The optimal EMI shielding efficiency exceeds 99%,and covers the entire X-band.Meanwhile,the green shielding index rises from 0.3 to 0.6,indicating that it is a potential green EMI shielding materials.Furthermore,the periodic macroscopic interfaces and the inherent thermal anisotropy endow the films with thermal insulation and flexible in-frared stealth functions in simulated thermal environments.This work refreshes the insight into multi-band shielding,providing a new idea to EM energy governance.

关 键 词：PEDOT:PSS-patched magnetic graphene films Vacuum-assisted molecular patching engineering Dielectric genes Electromagnetic interference shielding Thermal stealth 

分 类 号：TQ127.11[化学工程—无机化工]