In the wake of intense research on metamaterials the two-dimensional analogue, known as
metasurfaces, has attracted progressively increasing attention in recent years due to the …

Metasurfaces as optically thin composite layers can be modeled as electric and magnetic
surface current sheets flowing in the layer volume in the metasurface plane. In the most …

Graded metasurfaces exploit the local momentum imparted by an impedance gradient to
mold the im**ing wave front. This approach suffers from fundamental limits on the overall …

Nonuniform metasurfaces (electrically thin composite layers) can be used for sha**
refracted and reflected electromagnetic waves. However, known design approaches based …

This paper analyzes the optimal communication involving large intelligent surfaces (LIS)
starting from electromagnetic arguments. Since the numerical solution of the corresponding …

Regarding miniaturized and integrated systems, a single flat device that possesses
diversified functionalities is highly desirable in optical to microwave regimes. With this …

We review the current trends in the design of Huygens' metasurfaces (HMSs), which are
planar arrays of balanced electric and magnetic polarizable particles (meta-atoms) of …

Metasurfaces characterized by a transverse gradient of local impedance have recently
opened exciting directions for light manipulation at the subwavelength scale. Here we add a …

We introduce a paradigm for accurate design of metasurfaces for intricate beam
manipulation, implementing functionalities previously considered impossible to achieve with …

Metasurfaces consisting of electrically thin and densely packed planar arrays of
subwavelength elements enable an unprecedented control of the im**ing electromagnetic …