A simple metamaterial resonator structure based efficiency electrically small semi-circular loop antenna (ESSCLA) is proposed. It is demonstrated numerically that capacitance offered by the simple metamaterial resonator structure can counteract the inductive impedance of the ESSCLA at the resonance frequency. The overall structures of ESSCLA can be fabricated on one dielectric substrate, and ma...

Manuel Decker,1,2 Nils Feth,1,2 Costas M. Soukoulis,3,4 Stefan Linden,1,2,5 and Martin Wegener1,2 1Institut für Nanotechnologie, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany 2Institut für Angewandte Physik and DFG-Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), Wolfgang-Gaede Strasse 1, D-7...

We introduce a particular low-symmetry (point group of unit cell C(1)) planar periodic arrangement of magnetic split-ring resonators that acts as an effective optical wave plate. We show that this behavior specifically results from the in-plane interactions among the individual split-ring resonators. Measured normal-incidence transmittance and conversion spectra of gold-based samples fabricated...

Coupled split-ring-resonator metamaterials have previously been shown to exhibit large coupling effects, which are a prerequisite for obtaining large effective optical activity. By a suitable lateral arrangement of these building blocks, we completely eliminate linear birefringence and obtain pure optical activity and connected circular optical dichroism. Experiments around a 100 THz frequency ...

We investigate the use of a split-ring resonator (SRR) incorporated with an atomic-vapor cell to improve sensitivity and minimal detectable electric (E) field Rydberg atom-based sensors. In this approach, sub-wavelength SRR is placed around atomic vapor-cell filled cesium atoms for E-field measurements at 1.3 GHz. The provides factor 100 in enhancement measurement sensitivity. Using electromagn...