Performance of transverse magneto-optical Kerr effect in double-positive, double-negative and single-negative bi-gyrotropic metamaterials

Graphene–Carbon Black/CaCu3Ti4O12 Ternary Metacomposites toward a Tunable and Weakly ε-Negative Property at the Radio-Frequency Region

“…The ε-negative (negative permittivity ε′) property has drawn tremendous attention in electromagnetic field because of its promising applications to novel sensors, high-permittivity capacitors, broadband photodetectors, patch antennas, information encoding devices, and so on. − Recently, the ε-negative property can be obtained in metamaterials with an artificially periodical arrangement of subwavelength units and metacomposites with percolative networks composed of randomly distributed conductive units. , Typically, ε-negative in metamaterials closely relates with the geometric configuration of structural units, resulting in some limitations such as narrow response bandwidth and complex preparation process. , In contrast, ε-negative in metacomposites depends on materials’ intrinsic properties , and can be tuned by optimizing the percolative networks, and so metacomposites provide a flexible alternative for metamaterials because of their large-scale production and low cost. , …”