Wire-cloth-mesh metamaterials for GHz and THz frequency regime

Wire-cloth-mesh structures are introduced as metamaterials. They are experimentally investigated in terms of their metamaterial properties. It is shown that they exhibit pronounced pass-band characteristics in GHz and THz bands. Transmission minima are explained in terms of Rayleigh-Wood anomaly. While slow-light propagation occurs in pass-band region, fast-light outside the mentioned region. This allows us to investigate abnormal propagation effects in these materials. These meshes are commercially available as precisely fabricated chemical particle filters and come in many sizes which facilitate their application as metamaterials in optical devices, antennas, multilayer structures, and so on.