High-Sensitivity Goos-Hanchen Shift Sensing via Surface Plasmon Resonance and Beam Displacement Amplification.

ABSTRACT: Surface plasmon resonance (SPR) sensing technology has been widely utilized in fields such as biomedicine, food safety, and drug screening for real-time, rapid, and label-free detection of biomolecular interactions. However, conventional SPR sensing methods find it difficult to provide the necessary sensitivity and stability when detection applications go toward ultra-low concentrations and tiny molecular weight analytes. Here, we present a high-sensitivity Goos-Hänchen shift sensing based on SPR and beam displacement amplification technology (BDAT). The incorporation of BDAT significantly amplifies the magnitude of GH shift with remarkable stability, enhancing the sensing sensitivity by an order of magnitude. The sensor achieves a sensitivity of 3.62 × 10⁴ μm/RIU and a minimum

SUBMITTER: Li Q 

PROVIDER: S-EPMC11902807 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature