石墨烯超材料微结构材质的制备及其在吸波涂层改进设计上的应用

Preparation of Graphene Metamaterial Microstructure Material and Its Application in Improved Design of Microwave Absorbing Coatings

摘要: 本文利用石墨烯开发了一种新型超材料微结构材质，并将其应用于W型钡铁氧体吸波涂层的改进设计，分析了改进设计对吸波性能的影响，并对吸波机理进行了研究。通过仿真发现，经过超材料改进设计的吸波涂层的吸波性能得到了大幅提高，1.0 mm吸波涂层的有效吸收带宽可从0大幅增加到11.3 GHz，2.0 mm吸波涂层−20 dB的吸收带宽可达11.4 GHz。本文通过仿真还对经超材料改进设计的吸波涂层在不同频点处的电场、磁场和能量损耗分布情况进行了分析和讨论。

Abstract: Graphene was used to develop a new type of metamaterial microstructure material, which was applied to improved design of W-type barium ferrite microwave absorbing coatings. The influence of improved design on absorbing performance was analyzed and the absorbing mechanism was investigated. The simulation results show that the microwave absorbing performance of the mi-crowave absorbing coatings has been greatly improved by metamaterials. The effective absorption bandwidth of 1.0 mm microwave absorbing coating can be greatly increased from 0 to 11.3 GHz, and the −20 dB absorption bandwidth of 2.0 mm microwave absorbing coating can reach 11.4 GHz. The distribution of electric field, magnetic field and power loss at different frequency points of microwave absorbing coating improved by metamaterials is also analyzed and discussed through simulation.