Time-Varying Artificial Photonic Metastructures: introduction to the special issue

Time-varying metamaterials are currently at the forefront of research, offering immense possibilities for intriguing wave manipulation. In this Feature Issue, we provide a collection of the most recent results on time-varying artificial photonic metastructures, together with the review paper on the general properties of time-varying dispersive materials and an opinion paper on the topic from A. Boltasseva, V.M. Shalaev and M. Segev.