Ultrahigh sensitive refractive index nanosensors based on nanoshells, nanocages and nanoframes: effects of plasmon hybridization and restoring force.

ABSTRACT: In this study, the effect of the plasmon hybridization mechanism on the performance and refractive index (RI) sensitivity of nanoshell, nanocage and nanoframe structures is investigated using the finite-difference time-domain simulation. To create nanocage structure, we textured the cubic nanoshell surfaces and examined the impact of its key parameters (such as array of cavities, size of cavities and wall thickness) on the nanocage's RI-sensitivity. Synthesis of the designed nanocages is a challenging process in practice, but here the goal is to understand the physics lied behind it and try to answer the question "Why nanoframes are more sensitive than nanocages?". Our obtained results show that the RI-sensitivity of nanocage structures increases continuously by decreasing the array of cav

SUBMITTER: Omrani M 

PROVIDER: S-EPMC7822811 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature