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We designed, fabricated and characterized a tunable metamaterial in the terahertz frequency range based on a hybrid topology composed of metallic cut-wires separated by vanadium dioxide (VO2) patterns. The response of the hybrid metamaterial is significantly changing as the VO2 material is performing a reversible thermally or electrically-driven metal-insulator transition which drastically modifies...
We experimentally demonstrate a family of compact and efficient IR and THz electro-optical modulators based on active planar metamaterials (metasurfaces) hybridised with liquid crystals.
Frequency selective surfaces are very well known and have been investigated in detail. Here we for the first time introduce the concept of a wavevector selective surface and demonstrate it experimentally.
This paper reports a terahertz metamaterial consisting of 3-D microcoils fabricated with an automatic wire bonder in a fully MEMS-compatible manner. The response of the system to an incident electromagnetic wave was characterized by terahertz time-domain spectroscopy (TDS) and by numerical simulations. Depending on the light polarization relative to the structure, fundamental and higher order electric...
The behavior of an electromagnetic metamaterial that presents a phenomenological analogue of the Mossbauer effect was reported, where the metamaterial resonance becomes narrower and stronger with increasing number of meta-molecules in the array structure, similarly to how the broad gamma-emission line collapses in crystalline media.
Metamaterial structures are investigated by a novel terahertz near-field imaging technique. Our approach maps the inplane electric and out-of-plane magnetic field vectors and thereby provides a detailed investigation of various metamaterial designs and their electromagnetic near-field response.
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