Metasurfaces, which offer a diverse range of functionalities in a remarkably compact size,
have captured the interest of both scientific and industrial sectors. However, their inherent …

The topological properties of an object, associated with an integer called the topological
invariant, are global features that cannot change continuously but only through abrupt …

Metasurfaces, a two-dimensional (2D) form of metamaterials constituted by planar meta-
atoms, exhibit exotic abilities to tailor electromagnetic (EM) waves freely. Over the past …

Here we present a roadmap on Photonic metasurfaces. This document consists of a number
of perspective articles on different applications, challenge areas or technologies underlying …

Intelligent metasurfaces have gained significant importance in recent years due to their
ability to dynamically manipulate electromagnetic (EM) waves. Their multifunctional …

Next‐generation holographic displays have promising applications in medical science,
augmented/virtual reality, smart security, data encryption, etc. Although metasurfaces …

Abstract Information security is of great importance in every aspect of life, spawning
numerous modern cryptographic strategies to protect data from stealing and deciphering …

Programmable photonic integrated circuits (PICs) have recently gained significant interest
because of their potential in creating next-generation technologies ranging from artificial …

In this Perspective, we discuss the different opportunities offered by time-modulated
metasurfaces for dynamic wavefront engineering and space-time photonics. Efforts in …

Inducing a large refractive-index change is the holy grail of reconfigurable photonic
structures, a goal that has long been the driving force behind the discovery of new optical …