Figure 1
(a) Schematic of the exploded view of the tunable metamaterials. (b) One unit cell of the tunable metamaterial, including BC-SRRs, where SRR1 is on a silicon frame and SRR2 on a SiNx thin-film. The SRRs are under electric excitation in which the electric field is perpendicular to the gaps of the SRRs. (c) Simulated spectra of the individual uncoupled SRRs and broadside-coupled SRRs when d=20 μm. (d) The surface charge distribution of the symmetric mode and anti-symmetric mode of the BC-SRRs. BC-SSRs, broadside-coupled SRRs; SRRs, split-ring resonators.
