Optically variable devices (OVDs) are in tremendous demand as optical indicators against
the increasing threat of counterfeiting. Conventional OVDs are exposed to the danger of …

Metasurfaces, composed of specifically designed subwavelength units in a two-dimensional
plane, offer a new paradigm to design ultracompact optical elements that show great …

Vectorial holography has gained a lot of attention due to the promise of versatile polarization
control of structured light for enhanced optical security and multi-channel optical …

Metasurfaces, which are the two-dimensional counterparts of metamaterials, have
demonstrated unprecedented capabilities to manipulate the wavefront of electromagnetic …

Anti‐counterfeiting techniques have become a global topic since they is correlated to the
information and data safety, in which multimodal luminescence is one of the most desirable …

In recent years, metasurfaces have attracted considerable interest for their unprecedented
capabilities to manipulate intensity, phase, and polarization of an electromagnetic wave …

Structural colors are promising candidates for their antifading and eco-friendly
characteristics. However, high cost and complicated processing inevitably hinder their …

Polarization optics plays a pivotal role in diffractive, refractive, and emerging flat optics, and
has been widely employed in contemporary optical industries and daily life. Advanced …

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 …

Tailoring light properties using metasurfaces made of optically thin and subwavelength
structure arrays has led to a variety of innovative optical components with intriguing …