Magnetic and electric excitations in split ring resonators

Magnetic and electric excitations in split ring resonators.

We studied the electric and magnetic resonances of U-shaped SRRs. We showed that higher order excitation modes exist in both of the electric and magnetic resonances. The nodes in the current distribution were found for all the resonance modes. It turns out that the magnetic resonances are the modes with odd-number of half-wavelength of the current wave, i.e. lambda/2, 3lambda/2 and 5lambda/2 mo...

Electric coupling to the magnetic resonance of split ring resonators

We study both theoretically and experimentally the transmission properties of a lattice of split ring resonators ~SRRs! for different electromagnetic ~EM! field polarizations and propagation directions. We find unexpectedly that the incident electric field E couples to the magnetic resonance of the SRR when the EM waves propagate perpendicular to the SRR plane and the incident E is parallel to ...

Three-dimensional movable metamaterial using electric split-ring resonators.

We have demonstrated a three-dimensional movable metamaterial (MM) with reconfigurable electric split-ring resonators (eSRR) at terahertz frequencies. This is accomplished by making planar arrays of eSRR with movable stress curved beams (eSRR-MSCBs) which are actuated out-of-plane by electrostatic force. Our results have demonstrated that the eSRR-MSCBs possess blueshifting capabilities and pol...

Frequency dependence of the magnetic response of split-ring resonators

Magnetic response of split ring resonators at terahertz frequencies

Costas M. Soukoulis 1, , Thomas Koschny, Jiangfeng Zhou, Maria Kafesaki, and Eleftherios N. Economou 1 Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA 2 Institute of Electronic Structure and Laser – FORTH, and Department of Materials Science and Technology, University of Crete, Greece 3 Institute of Electronic Structure and Laser – FORTH, an...