基于石墨烯超材料宽角度高吸收的研究

Studyon Wide-Angle High-Absorption Based on Graphene Metamaterials

为了设计宽角度高吸收的电磁波吸收器件,基于石墨烯超材料,设计了级联的层状结构。利用超材料的特殊属性推导了传输矩阵公式,并利用它研究了所设计结构的传输特性。研究结果表明,在保持高吸收率的条件下,通过调节结构参数,可以实现宽角度吸收带宽。吸收带宽与级联层数有关,但层数达到某个特定的值时吸收带宽趋于饱和。

In order to design a wide-angle high-absorption electromagnetic wave absorption device, a cascaded stratified structure based on graphene metamaterials is designed. By means of the special attributes of metamaterials, the transfer matrix formula is derived, which is used to study the transmission characteristics of the designed structure. The research results show that, under the condition that a high-absorption rate is kept, a wide-angle absorption bandwidth can be achieved by adjusting the structural parameters. The absorption bandwidth is related to the number of cascaded layers, however the absorption bandwidth tends to saturate when the number of layers reaches a certain value.