The growing maturity of nanofabrication has ushered massive sophisticated optical
structures available on a photonic chip. The integration of subwavelength-structured …

We review the basic physics and applications of a special class of planar metamaterials,
often called metasurfaces, which are composed of optically thin and densely packed planar …

In this Letter, we demonstrate highly efficient, polarization-insensitive planar lenses
(metalenses) at red, green, and blue wavelengths (λ= 660, 532, and 405 nm). Metalenses …

Manipulating the properties of the isofrequency contours (IFCs) of materials provides a
powerful means of controlling the interaction between light and matter. Hyperbolic …

Surface plasmons (SPs) are electromagnetic surface waves that propagate at the interface
between a conductor and a dielectric. Due to their unique ability to concentrate light on two …

We combine theory and experiment to demonstrate that a carefully designed gradient meta-
surface supports high-efficiency anomalous reflections for near-infrared light following the …

The arbitrary control of electromagnetic waves is a key aim of photonic research. Although,
for example, the control of freely propagating waves (PWs; refs,,,,,) and surface waves (SWs; …

Metamaterials and transformation optics play substantial roles in various branches of optical
science and engineering by providing schemes to tailor electromagnetic fields into desired …

Surface topography and refractive index profile dictate the deterministic functionality of a
lens. The polarity of most lenses reported so far, that is, either positive (convex) or negative …

Surface plasmon polaritons (SPPs) have been widely exploited in various scientific
communities, ranging from physics, chemistry to biology, due to the strong confinement of …