Time-varying metamaterials and metasurfaces have unlocked a novel way for the electromagnetic waves to interact with artificial materials. In this contribution, we present an overview of the recent components and devices based on time modulation of artificial media, surfaces, and illumination signals for achieving time-domain devices, magnet-less non-reciprocity, doppler cloaking, frequency conversion, and virtual energy accumulation into open cavities, respectively.
Ramaccia, D., Toscano, A., Bilotti, F. (2021). Electromagnetic devices and antenna systems based on space-time and time-varying metamaterials and metasurfaces. In 2021 15th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2021 (pp.362-364). Institute of Electrical and Electronics Engineers Inc. [10.1109/Metamaterials52332.2021.9577067].