When all minimum reflectance data points are plotted against abs / sca , as shown in Figure (b), all the resulting dependences ca be readily fitted by the same Gaussian curve. This series of detailed FDTD simulation results reveal that at any geometrical condition, the MIM metasurfaces follow the same rule for the relationship between abs and sca . This tendency is of paramount importance and limits the achievable maximum of at the perfect anti-reflection → 0 condition. Panels in Figure show abs / sca relationships with abs , sca , and ext , respectively, each normalized by the resonance wavelength. This graph reveals the maximum attainable absorbance, scattering and total extinction cross-section for a selected efficiency . All the plotted data points are clustered around the abs / sca = 1 condition. It is important to note that the maximum abs appears at abs / sca ≥ 1, whereas the maximum sca appears at abs / sca ≤ 1. Consequently, the maximum of ext is situated at abs / sca = 1. Estakhri et. al reported that gold/SiO 2 core-shell structures always exhibit maximum abs / 2 at abs / sca = 1 as well . Therefore, the observed tendency of sca to be tied to abs is expected and is defined by general plasmonic particle scattering dynamics.