Ceramic-based meta-material absorber with high-temperature stability

作     者：Xing-Cong Chen Wei-Jia Luo Run-Ni Zhao Yong-Zheng Wen Ji Zhou 

作者机构：State Key Laboratory of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua University 

出 版 物：《Rare Metals》 (稀有金属(英文版))

年 卷 期：2024年第43卷第9期

页      面：4433-4440页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术（可授工学、理学学位）] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the National Key R&D Program of China (No.2022YFB3806000) the National Natural Science Foundation of China (Nos.52332006,92163129,52072203 and 52202370) China Postdoctoral Science Foundation (No.2023T160359) 

主　　题：Meta-material absorber Microwave absorption Miniaturization Rare metal-based ceramics Temperature robustness 

摘      要：With the continuous exploration of uncharted and extreme environments,enhanced temperature robustness of passive devices has become particularly *** this study,a ceramic-based meta-material absorber with exceptional temperature stability is developed using a fusion design approach that combines rare metal-based tungsten bronze structural ceramics and ***,the absorbance of the meta-material array based on Mie resonance exceeds 49.0%in both waveguides and free space,approaching the theoretical *** to impedance analysis,the absorption performance can be distinctly correlated with the dielectric loss （Q_f）.Notably,the high-temperature robustness is verified to still be effective at 400℃.These advancements in our design allow for the use of monolithic materials in fabricating temperature-stable perfect absorbers,providing greater freedom in the dielectric performance and expanding their potential applications,including in space exploration and 5G millimeter-wave scenarios.