The special electromagnetic properties of metamaterials have contributed to the development terahertz technology, and broadband absorbers for various applications been investigated. design metamaterial with tunability is in a particularly attractive position. In this work, tunable absorber proposed based on phase transition material vanadium dioxide (VO2). simulation results show that an excell...

In this paper, few-layer porous graphene is integrated onto the surface of a metasurface layer to provide a uniform static electric field to efficiently control liquid crystal, thereby enabling flexible metamaterial designs. We demonstrate a tunable cross-shaped metamaterial absorber with different arm lengths driven by this combined metasurface and graphene electrode. The resulting absorber su...

Sensing infrared radiation is done inexpensively with pyroelectric detectors that generate a temporary voltage when they are heated by the incident infrared radiation. Unfortunately the performance of these detectors deteriorates for longer wavelengths, leaving the detection of, for instance, millimetre-wave radiation to expensive approaches. We propose here a simple and effective method to enh...