BACKGROUND Metasurfaces have opened up a number of remarkable new approaches to
manipulate light. These flat optical elements are constructed from a dense array of strongly …

Optical metasurfaces with subwavelength thickness hold considerable promise for future
advances in fundamental optics and novel optical applications due to their unprecedented …

The success of semiconductor electronics is built on the creation of compact, low-power
switching elements that offer routing, logic and memory functions. The availability of …

Metasurfaces, with extremely exotic capabilities to manipulate electromagnetic (EM) waves,
have derived a plethora of advanced metadevices with intriguing functionalities …

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

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 …

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

Active plasmonics is a burgeoning and challenging subfield of plasmonics. It exploits the
active control of surface plasmon resonance. In this review, a first-ever in-depth description …

Geometry, an ancient yet vibrant branch of mathematics, has important and far-reaching
impacts on various disciplines such as art, science, and engineering. Here, we introduce an …

Owing to their atomic layer thickness, strong light–material interaction, high nonlinearity,
broadband optical response, fast relaxation, controllable optoelectronic properties, and high …