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Metasurface and Metamaterial

Metasurface and Metamaterial

Exotic phenomena like negative refractive index and near-zero index were brought into the limelight by John Pendry’s work on artificial materials. It is a widely established fact that when an electromagnetic wave strikes a composite medium, it induces electric and magnetic dipole moments in the inclusions. These dipole moments are closely related to the effective permittivity and permeability of the composite medium. Since the size, density, shape, and orientation of the inclusions can be controlled by the designer, materials with specific electromagnetic response can be synthesized. These artificially designed materials are called metamaterials. On the other hand, Metasurfaces are two-dimensional or surface counterparts of metamaterials. Following the recent trend in the research community, this group is focused in designing of metamaterial-based antennas and metasurfaces for applications relevant to 5G and beyond.

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