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Bio-Inspired microwave modulator for High-Temperature Electromagnetic Protection,Infrared Stealth and Operating Temperature Monitoring

引用

Nano-Micro Letters 2022年第2期14卷 124-135页

作者： Xuan Yang Yuping Duan Shuqing Li Huifang Pang Lingxi Huang Yuanyuan Fu Tongmin Wang Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116085People’s Republic of China Science and Technology On Power Beam Processes Laboratory AVIC Manufacturing Technology InstituteBeijing 100024People’s Republic of China

High-temperature electromagnetic(EM) protection materials integrated of multiple EM protection mechanisms and functions are regarded as desirable candidates for solving EM interference over a wide temperature *** this work,a novel microwave modulator is fabricated by introducing carbonyl iron particles(CIP)/resin into channels of carbonized wood(C-wood).Innovatively,the spaced arrangement of two microwave absorbents not only achieves a synergistic enhancement of magnetic and dielectric losses,but also breaks the translational invariance of EM characteristics in the horizontal direction to obtain multiple phase discontinuities in the frequency range of 8.2-18.0 GHz achieving modulation of reflected wave radiation ***,CIP/C-wood microwave modulator demonstrates the maximum effective bandwidth of 5.2 GHz and the maximum EM protection efficiency over 97% with a thickness of only 1.5 mm in the temperature range 298-673 ***,CIP/C-wood microwave modulator shows stable and low thermal conductivities,as well as monotonic electrical conductivity-temperature characteristics,therefore it can also achieve thermal infrared stealth and working temperature monitoring in wide temperature *** work provides an inspiration for the design of high-temperature EM protection materials with multiple EM protection mechanisms and functions.

关键词： microwave modulator Electromagnetic protection High temperatures Temperature monitoring Carbonized wood

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