Sensitive terahertz plasmonic metasurface biosensor integrated with microfluidics.

ABSTRACT: In recent years, substantial research has driven the development of low-cost biosensors in the terahertz (THz) range. This study introduces an advanced biosensor structure that integrates a monolayer graphene strip and a gold bar within a microfluidic channel, specifically optimized to reduce environmental impact and enhance sensitivity in biological detection. The unique design incorporates a tunable plasmon-induced transparency (PIT) mechanism, enabling precise control of the coupling between dark and bright modes (graphene and gold) to achieve high sensitivity. To analyze this structure comprehensively, Maxwell's equations were solved using the finite element method (FEM) to extract S-parameters, while the Lorentz oscillator model was employed to verify the damping rates and coup

SUBMITTER: MoradiFotouhi A 

PROVIDER: S-EPMC12171736 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature