This Colloquium presents an overview of the research on nonlinear electromagnetic
metamaterials. The developed theoretical approaches and experimental designs are …

We study experimentally the dynamic tunability and self-induced nonlinearity of split-ring
resonators incorporating variable capacitance diodes. We demonstrate that the …

The essence of the metamaterial concept from the structural point of view. Particular
attention is paid to the macroscopic description of metamaterials and to the corresponding …

We study both theoretically and experimentally the dynamic tunability of the magnetic
resonance of a single nonlinear split-ring resonator with varactor diode at microwave …

A magnetic field tunable, broadband, low-loss, negative refractive index metamaterial is
fabricated using yttrium iron garnet (YIG) and a periodic array of copper wires. The tunability …

Starting from Maxwell's equations, we use the reductive perturbation method to derive a
second-order and a third-order nonlinear Schrödinger equation, describing ultrashort …

New perfect frequency selective surface (FSS) metamaterial absorbers (MAs) based on
resonator with dielectric configuration are numerically presented and investigated for both …

We consider short pulse propagation in nonlinear metamaterials characterized by a weak
Kerr-type nonlinearity in their dielectric response. In the frequency “band gaps”(where linear …

We observed enhanced second-harmonic-wave generation in a plasma-metamaterial
composite, the intensity of which was much stronger than that in plasma with a similar level …

Nature has provided us with a wide range of materials exhibiting various electromagnetic
properties. However, theoretical speculations [1] have suggested that having materials with …