Fig. 4: Surface current distributions and dipolar responses of the kirigami-based metamaterials.
From: Kirigami metamaterials for reconfigurable toroidal circular dichroism
a The orientation of the four split-ring resonators. b The surface current distributions at a resonant frequency of 6.9 GHz. Four resonators all working via the asymmetric modes with in-plane electric dipoles and out-of-plane magnetic dipoles. c The surface current distributions for the resonant modes of the L-handed type-I KCMM. The induced electric and magnetic dipoles have anti-parallel components, resulting in the left-handedness. d, e The surface current distributions for the first (d) and second (e) resonant modes of the L-handed type-II KCMM. The induced electric and magnetic dipoles have anti-parallel components at 6.78 GHz but parallel components at 7.8 GHz, leading to the opposite handedness of the kirigami-based metamaterial at the two resonant frequencies
