Ultrahigh Electromagnetic Interference Shielding and Integrated Thermal Sensing-encryption Enabled by a Honeycomb-inspired Multifunctional Foam
简介：With the rapid development of intelligent electronic and military equipment,multifunctional flexible materials that integrat electro-magnetic interference(EMI)shielding,temperature sensing,and information encryption are urgently required.This study presents a bio-inspired hierarchical composite foam fabricated using supercritical nitrogen foaming technology.This material exhibits a honeycomb structure,with pore cell sizes controllable within a range of 30-92 μm by regulating the filler.The carbon fiber felt(CFf)provides efficient reflection of electromagnet-ic waves,while the chloroprene rubber/carbon fiber/carbon black foam facilitates both wave absorption and temperature monitoring through its optimized conductive network.This synergistic mechanism results in an EMI shielding effectiveness(SE)of 60.06 dB with excellent tempera-ture sensing performance(The temperature coefficient of resistance(TCR)is-2.642％/℃)in the 24-70 ℃ range.Notably,the material has a ther-mal conductivity of up to 0.159 W/(m·K),and the bio-inspired layered design enables information encryption,demonstrating the material's po-tential for secure communication applications.The foam also has tensile properties of up to 5.13 MPa and a tear strength of 33.02 N/mm.This biomimetic design overcomes the traditional limitations of flexible materials and provides a transformative solution for next-generation applica-tions such as flexible electronics,aerospace systems and military equipment,which urgently need integrated electromagnetic protection,ther-mal management and information security.展开
学者：Shao-PengYuYaLiuMing-YuHaoXINZhangXUYi-ChengYuanZhen-Xiu
关键词：FlexibilityCellular structuresElectromagnetic interference shieldingTemperature sensorMessage encryption
在线出版日期：2026-04-03 （网站首发日期）
