Fabrication optimization and application of 3D hybrid SERS substrates.

ABSTRACT: Three-dimensional (3D) plasmonic nanostructures with nanoparticles that can be tuned have got a lot of attention in surface-enhanced Raman scattering (SERS) due to the unique 3D plasmonic coupling. Here, two nanoparticles, gold nanosphere (AuNS) and gold nanooctahedra (AuNO), were used to construct 3D hybrid SERS substrates to investigate the effect of nanoparticle spatial position on the SERS performance of the 3D nanostructure and to obtain 3D substrates with high SERS activity. And more hybrid combination possibilities were tested to explore the variation trend of hot spots generated when the nanoparticles were near. First, two-dimensional (2D) planar substrates were prepared using the air-liquid interface-assisted self-assembly method, to examine the effect of nanoparticle size on SERS

SUBMITTER: Geng X 

PROVIDER: S-EPMC9041343 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature