High-performance wearable bimetallic nanowire-assisted composite foams for efficient electromagnetic interference shielding,infrared stealth,and piezoresistive sensing  

作　　者：Tianyi Hang Lijie Zhou Chenhui Xu Yiming Chen Jiahui Shen Jiajia Zheng Pingan Yang Xiping Li Heng Luo Guoxiu Tong 

机构地区：[1]Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology and Equipment of Zhejiang Province,College of Engineering,Zhejiang Normal University,Jinhua 321004,China [2]School of Automation,Chongqing University of Posts and Telecommunications,Chongqing 400065,China [3]State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China [4]Key Laboratory of the Ministry of Education for Advanced Catalysis Materials,College of Chemistry and Materials Science,Zhejiang Normal University,Jinhua 321004,China

出　　处：《Nano Research》2024年第7期6757-6765,共9页纳米研究（英文版）

基　　金：supported by the Zhejiang Provincial Natural Science Foundation of China(No.LQ22E030016);the National Natural Science Foundation of China(Nos.52275137 and 51705467);the China Postdoctoral Science Foundation(No.2022M722831);the Postdoctoral Research Selected Funding Project of Zhejiang Province(No.ZJ2022063);the Self-Topic Fund of Zhejiang Normal University(No.2020ZS04).

摘　　要：With the accelerated development of modern detection and communication technology,the multifunctional wearable materials with excellent electromagnetic interference(EMI)shielding,infrared stealth,and human monitoring for improving military combat capability have received extensive attention.In this work,the lightweight melamine foam(MF)@silver nanowires(AgNWs)-iron nanowires(FeNWs)(AgFe-MF)was fabricated by a vacuum-assisted dip-coating method.Due to the porous structure and synergistic electrical and magnetic losses,this lightweight(0.115 g/cm^(3))composite foam with an ultra-low filler content(0.62 vol.%)exhibited an ideal EMI shielding efficiency of 38.4 dB.On the other hand,the AgFe-MF realized a powerful multifunctional integration.The surface saturation temperature of the AgFe-MF reached 94.2℃under a low applied voltage of 1.8 V and remained extremely fast heating and cooling response and terrific working stability,resulting in excellent infrared stealth and camouflage effects.Furthermore,taking virtues of the elastic porous conductive architecture,the AgFe-MF was utilized as a piezoresistive sensor exhibiting board compressive interval of 0–1.62 kPa(50%strain)with a good sensitivity of 0.57 kPa^(−1).This work will provide new ideas and insights for developing multifunctional wearable devices in the fields of EMI shielding,thermal management,and piezoresistive sensing.

关 键 词：metal nanowires porous foams electromagnetic interference shielding infrared stealth wearable sensors 

分 类 号：TB383[一般工业技术—材料科学与工程]