Plasmonic Metasensors Based on 2D Hybrid Atomically Thin Perovskite Nanomaterials.

ABSTRACT: In this work, we have designed highly sensitive plasmonic metasensors based on atomically thin perovskite nanomaterials with a detection limit up to 10-10 refractive index units (RIU) for the target sample solutions. More importantly, we have improved phase singularity detection with the Goos-Hänchen (GH) effect. The GH shift is known to be closely related to optical phase signal changes; it is much more sensitive and sharp than the phase signal in the plasmonic condition, while the experimental measurement setup is much more compact than that of the commonly used interferometer scheme to exact the phase signals. Here, we have demonstrated that plasmonic sensitivity can reach a record-high value of 1.2862 × 109 µm/RIU with the optimum configurations for the plasmonic metasensors. The phase

SUBMITTER: Zeng S 

PROVIDER: S-EPMC7407500 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature