Figure 2
From: Mid-infrared plasmonic inductors: Enhancing inductance with meandering lines
Inductance extraction by means of the magnetic field and induced surface currents.
(a), Normal component of the magnetic field (in color) and induced surface currents (arrows) when the structure is excited with a normal incident plane wave with the electric field oriented vertically. The interpretation of the inductances is shown explicitly. LB models the inductance of each current branch around the aperture and C the admittance of the below-cutoff TM modes excited at the discontinuity plane. S (dashed green) depicts the surface taken for the integration of the magnetic flux of each VCL and L (solid blue) the closed line to compute the total induced surface current. (b), Inductance values obtained numerically (squares) and after optimization with the equivalent circuit model (crosses). (c), Normal component of the magnetic field (Hn-Field) for the 3-turns design where the magnetic field concentration in the meander's interstices is shown. For the meander-turns, several lines are evaluated to compute the total induced current. For the 3-turns design the lines are depicted as L1 to L5. (a, c) share the same color bar.
