Exploring plasmonic gradient metasurfaces for enhanced optical sensing in the visible spectrum.

ABSTRACT: While conventional optical sensors hold historical significance, they face inherent limitations in sensitivity, operational intricacies, and bulky size. A breakthrough in this realm comes from the advent of metasurface sensors, which leverage nanoscale optical effects, thereby expanding the horizons of optical sensing applications. However, past methods employed in metasurface sensors predominantly rely on wavelength shifts or intensity changes with high-Q resonances, thereby significantly restricting the detection bandwidth. In response to these challenges, this study introduces a plasmonic gradient metasurface-based sensor (PGMS) designed for refractive index detection across a wide wavelength spectrum. Through the utilization of the Pancharatnam-Berry phase method, the PGMS achie

SUBMITTER: Huang SH 

PROVIDER: S-EPMC11502102 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature