“…Metasurfaces, two-dimensional (2D) metamaterials composed of subwavelength resonators, can be utilized to efficiently tailor an incident electromagnetic wave [1,2]. They have been used in many applications, such as flat lenses [3,4], metamirrors [5,6], polarization converters [7,8], full-color printers [9], holographs [10,11], optical vortex generators [12,13], and beam splitters [14,15]. Light absorption is another eye-catching characteristic of these artificial systems [16], and metastructures with a nearly perfect light absorption characteristic are referred to as metasurface/metamaterial nearly perfect absorbers (MPAs).…”