Fig. 2: Angular and Fermi-level dependence of reflection coefficients and emissivity.
From: Electrostatic steering of thermal emission with active metasurface control of delocalized modes

Fermi-level and angular dependence of a the reflectance due to the F-B resonance (∣rFP∣2), b the direct reflectance from the top surface of the device (∣rdirect∣2), c The phase difference between the two reflection (ϕFP − ϕdirect), and d the emissivity of the device (ϵ). The blue dashed line in a indicates the F-P resonance condition. The black dashed line in c, d indicates the condition for destructive interference between rFP and rdirect, ∣ϕFP − ϕdirect∣ = π. All angular spectra are calculated for frequency ω = 1503 cm−1.