Near-Infrared Perfect Absorption and Refractive Index Sensing Enabled by Split Ring Nanostructures.

ABSTRACT: Plasmonic nanostructures as narrowband perfect absorbers have garnered significant attention due to their potential applications in biosensing and environment detection. This study emphasizes the investigation of arrayed split ring nanostructures within the configuration of metal-insulator-metal (MIM) multilayers, resulting in a maximum light absorption of 99.94% in the near-infrared (NIR) spectral range. The exceptional absorption efficiency of the device is attributed to the strong resonance of electric and magnetic fields arising from the Fabry-Pérot cavity resonance. The resonant peak can be flexibly tuned by engineering the dielectric layer thickness, the period, and the geometric parameter of split rings. Remarkably, the device exhibits promising capabilities in sensing, demonstratin

SUBMITTER: Ali W 

PROVIDER: S-EPMC10574369 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature