BACKGROUND Future high-performance portable and wearable optical devices and
systems with small footprints and low weights will require components with small form …

Optical metamaterials have presented an innovative method of manipulating light.
Hyperbolic metamaterials have an extremely high anisotropy with a hyperbolic dispersion …

Conventional microwave imagers usually require either time-consuming data acquisition, or
complicated reconstruction algorithms for data post-processing, making them largely …

Metasurfaces, which consist of arrays of subwavelength scatterers, can be used to precisely
control incident electromagnetic fields, but are typically static once fabricated. A dynamically …

Metasurfaces have enabled a plethora of emerging functions within an ultrathin dimension,
paving way towards flat and highly integrated photonic devices. Despite the rapid progress …

Among various flat optical devices, metasurfaces have presented their great ability in
efficient manipulation of light fields and have been proposed for variety of devices with …

Optical vortices (OVs) carrying orbital angular momentum (OAM) have attracted
considerable interest in the field of optics and photonics owing to their peculiar optical …

Metamaterials are composed of periodic subwavelength metal/dielectric structures that
resonantly couple to the electric and/or magnetic components of the incident …

Metasurfaces have become a rapidly growing field of research in recent years due to their
exceptional abilities in light manipulation and versatility in ultrathin optical applications. They …

Holography has emerged as a vital approach to fully engineer the wavefronts of light since
its invention dating back to the last century. However, the typically large pixel size, small field …