Exploring Recent Developments in Plasmonic Metasurfaces

Metasurfaces, classified as a category of planar metamaterials, have seen burgeoning interest due to their ultra-thin design and efficient performance across interfaces. The field has progressed significantly since the establishment of the generalized Snell’s law, leading to substantial research in both dielectric and metallic (plasmonic) metasurfaces, particularly in terms of devices and systems. Despite high Ohmic losses at high frequencies which have limited the use of metallic metasurfaces, these remain prevalent in microwave and RF domains, typically in areas such as antenna transmit-arrays and propagation. The emerging area of meta-optics presents new opportunities, especially in lower spectrum applications, potentially enhancing device and system performance in the microwave or THz bands.

This Research Topic aims to spotlight and foster exploration of recent advancements in plasurfaces. New foundational theories, devices, and system applications will be examined, particularly through the lens of plasmonic technology which holds potential for revolutionary changes in several fields. Emphasis will be placed on understanding the latest materials, device physics, and practical uses that push the boundaries of current technology.

To collect a wide spectrum of groundbreaking insights in plasmonic metasurfaces, we invite contributions that are not limited to but include the following themes:

• Spoof surface plasmons (SSPs)

• Development of plasmonic filters

• Advances in SSPs antennas

• Techniques for RCS (Radar Cross Section) reductions

• Innovations in microwave and THz metalenses