Spaced Hybrid TiO₂/Au Nanotube Arrays with Tailored Optical Properties for Surface-Enhanced Raman Scattering.

ABSTRACT: Controlling the overall geometry of plasmonic materials allows for tailoring their optical response and the effects that can be exploited to enhance the performance of a wide range of devices. This study demonstrates a simple method to control the size and distribution of gold (Au) nanoparticles grown on the surface of spaced titanium dioxide (TiO₂) nanotubes by varying the deposition time of magnetron sputtering. While shorter depositions led to small and well-separated Au nanoparticles, longer depositions promoted the formation of quasi-continuous layers with small interparticle gaps. The optical spectra of Au/TiO₂ nanotubes showed a region of strong absorption (200-550 nm) for all samples and a region of decreasing absorption with an increase of effective Au thickn

SUBMITTER: Afshar M 

PROVIDER: S-EPMC11635504 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature