Electron Beam Induced Circularly Polarized Light Emission of Chiral Gold Nanohelices.

ABSTRACT: Chiral plasmonic nanostructures possess a chiroptical response orders of magnitude stronger than that of natural biomolecular systems, making them highly promising for a wide range of biochemical, medical, and physical applications. Despite extensive efforts to artificially create and tune the chiroptical properties of chiral nanostructures through compositional and geometrical modifications, a fundamental understanding of their underlying mechanisms remains limited. In this study, we present a comprehensive investigation of individual gold nanohelices by using advanced analytical electron microscopy techniques. Our results, as determined by angle-resolved cathodoluminescence polarimetry measurements, reveal a strong correlation between the circular polarization state of the emitted far-fi

SUBMITTER: Lingstadt R 

PROVIDER: S-EPMC10753880 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature