Figure 2
From: Analysis of mutual couplings in a concentric circular ring plasmonic optical antenna array
Current distributions in the individual rings at their corresponding resonant wavelengths. Dots, crosses, and diamonds: the current values from the CST simulation; Solid lines: calculated current using the |I| = |Imax|sin(ϕ) plots. The resonant current distributions follow the sinusoidal standing wave current distribution in the half-wave antennas.
