A new configuration for metasurface construction is presented to exhibit potential multi-functionalities including perfect absorption, bio/chem sensing, and enhancement of light–matter interaction. The reciprocal plasmonic metasurfaces discussed here are composed of two plasmonic surfaces of reciprocal geometries separated by a dielectric spacer. Compared to conventional metasurfaces this simple geometry exhibits an enhanced optical performance due to the hybrid plasmonic–photonic cavity. The discussed reciprocal metasurface design further enables effective structural optimization and allows for a simple and scalable fabrication. The physical principle and potential applications of the reciprocal plasmonic metasurfaces are demonstrated using numerical and analytical approaches.

提出了一种用于超表面构造的新配置，以展示潜在的多功能性，包括完美的吸收、生物/化学传感和光-物质相互作用的增强。这里讨论的互易等离子体超表面由两个互易几何形状的等离子体表面组成，由介电间隔物隔开。与传统的超表面相比，由于混合等离子体-光子腔，这种简单的几何形状表现出增强的光学性能。所讨论的互易超表面设计进一步实现了有效的结构优化，并允许简单且可扩展的制造。使用数值和分析方法证明了互易等离子体超表面的物理原理和潜在应用。