Optical metalenses—two-dimensional arrays of submicrometre scatterers that collectively
focus light—have experienced growing research interest in recent years as they can realize …

Augmented reality (AR) display, which superimposes virtual images on ambient scene, can
visually blend the physical world and the digital world and thus opens a new vista for human …

Control over the dispersion of the refractive index is essential to the performance of most
modern optical systems. These range from laboratory microscopes to optical fibres and even …

Metasurfaces have opened the door to next-generation optical devices due to their ability to
dramatically modulate electromagnetic waves at will using periodically arranged …

A quasi-bound state in the continuum (QBIC) has unique attraction in optical switch,
nonlinearity, communication, and sensing due to its ultrahigh radiation quality (Q) factor. The …

The full manipulation of intrinsic properties of electromagnetic waves has become the
central target in various modern optical technologies. Optical metasurfaces have been …

Nano-optic imagers that modulate light at sub-wavelength scales could enable new
applications in diverse domains ranging from robotics to medicine. Although metasurface …

Hyperspectral imaging is vital for material identification but traditional systems are bulky,
hindering the development of compact systems. While previous metasurfaces address …

Dispersion engineering is essential to the performance of most modern optical systems
including fiber-optic devices. Even though the chromatic dispersion of a meter-scale single …

During the past few years, metasurfaces have been used to demonstrate optical elements
and systems with capabilities that surpass those of conventional diffractive optics. Here, we …