High Quality-Factor All-Dielectric Metacavity for Label-Free Biosensing.

ABSTRACT: High sensitivity and high quality-factor are crucial for achieving outstanding sensing performance in photonic biosensors. However, strong optical field confinement and high light-biomolecule interactions on photonic surfaces are usually contradictory and challenging to satisfy simultaneously. Here, a distinctive configuration for addressing this issue is reported: embedding a nanophotonic metasurface inside a micro vertical cavity as a meta-channel (metacavity) biosensor. The analyte solution serves as the cavity medium, thereby maximizing the light-analyte interaction. Simulation validation is conducted to optimize the metacavity with high structural robustness and remarkable optical and sensing properties. Large-scale low-cost metacavity biosensors are realized by combining anodic alumi

SUBMITTER: Zheng Y 

PROVIDER: S-EPMC11775555 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature