面向多场景电磁伪装的可重构石墨烯超表面研究

The reconfigurable graphene metasurfaces for multi-scenario electromagnetic camouflage

文中提出了基于石墨烯超表面的可重构二面角形伪装平台和柔性伪装毯,通过控制石墨烯超表面单元的费米能级,将目标的电磁散射特性融入背景环境,使得敌方难以将目标与背景分离.具体而言,对于加载了该石墨烯超表面的目标,当其处于较为平坦背景上能够有效模拟准镜像反射,当其处于高粗糙度背景下能实现漫散射的效果,而当其处于粗糙度小于目标物理尺寸的低粗糙度背景中,则能够呈现出部分镜像反射和部分随机漫散射的电磁散射特征.本文提出的面向多场景电磁伪装的可重构石墨烯超表面为陆基电磁伪装的动态调控设计提供了一种新的思路.

In the paper,we propose the reconfigurable dihedral camouflage graphene meta-surface and flexible camouflage graphene meta-surface carpet for obtaining multi-scenario electromagnetic camouflage.Through tuning the Fermi energy of the units,the graphene metasurfaces are capable of incorporating the electromagnetic scattering characteristics of the target into the background environment and make it hard to separate the target from the background.Such graphene meta-surfaces will generate the quasi-specular reflection when locate over the nearly flat ground,and mimic the diffused reflections over the ground with high surface roughness,and realize the partially specular reflection and partially diffused reflection simultaneously when locate the ground with low surface roughness.Our design should pave the way for the land-based electromagnetic camouflage.