Review of progress in microwave electromagnetic stealth metasurfaces

Metasurfaces, which are two-dimensional arrays of subwavelength elements, enable versatile control of electromagnetic waves, thereby paving the way for advancements in electromagnetic stealth. Electromagnetic stealth aims to diminish object visibility to radar or other sensors by minimizing their reflection, scattering, or emission of electromagnetic waves. This paper reviews the latest works in microwave electromagnetic stealth devices utilizing metasurfaces, including absorbing, scattering, cloaking and multifunctional stealth techniques. A comprehensive analysis and characterization of these stealth metasurface based devices are presented, focusing on their working principles, performance characteristics, and the associated challenges. Additionally, we explore prospects and opportunities for further research. This paper offers a thorough and up-to-date survey of the current status and future directions of this emerging field.