Figure 1
From: Independently tunable dual-band perfect absorber based on graphene at mid-infrared frequencies
(a) Schematic of the independently tunable dual-band metamaterial perfect absorber consisting of an array of cross-shaped resonator pairs, a dielectric spacer, a gold ground plane and interdigitated graphene fingers enabling independent voltage bias. (b) Top view of the metamaterial unit cells with dimensions specified. The red dashed box represents a unit cell, containing four crosses (two of each size).
