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 …

Strong interactions of electromagnetic fields with plasmonic nanomaterials have been
exploited in various applications. These applications have centred on plasmon-enhanced …

Subwavelength optical resonators made of high-index dielectric materials provide efficient
ways to manipulate light at the nanoscale through mode interferences and enhancement of …

Deep learning in the context of nano-photonics is mostly discussed in terms of its potential
for inverse design of photonic devices or nano-structures. Many of the recent works on …

Plasmonic nanostructures hold promise for the realization of ultra-thin sub-wavelength
devices, reducing power operating thresholds and enabling nonlinear optical functionality in …

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

In the last two decades, plasmon resonance in gold nanoparticles (Au NPs) has been the
subject of intense research efforts. Plasmon physics is intriguing and its precise modelling …

Resonant metasurfaces are an attractive platform for enhancing the nonlinear optical
processes, such as second harmonic generation (SHG), since they can generate large local …

Fano resonance is a universal phenomenon observed in many areas where wave
propagation and interference are possible. Fano resonance arises from the interference of …

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 …