Self-Assembled Bimetallic Au-Ag Nanorod Vertical Array for Single Molecule Plasmonic Sensing.

ABSTRACT: Ordered plasmonic nanoparticle arrays are highly desirable for optical sensing, as they provide uniformly distributed plasmonic hotspots due to their periodic order and near-field coupling. Anisotropic-shaped bimetallic nanoparticles are of particular interest as their hybridized plasmonic modes enable precise tuning of plasmonic resonance and optical responses. However, the controlled assembly of large-scale arrays of bimetallic nanoparticles with uniformly distributed hotspots remains a challenge. In this study, we present a highly robust and reproducible method for creating large-area vertically aligned arrays of bimetallic Au-Ag nanorods by epitaxially growing Ag over preassembled Au nanorods. Structural characterization using electron microscopy and X-ray photoelectron spectroscopy co

SUBMITTER: Tanwar S 

PROVIDER: S-EPMC12017794 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature