Controlled Fabrication of Wafer-Scale, Flexible Ag-TiO₂ Nanoparticle-Film Hybrid Surface-Enhanced Raman Scattering Substrates for Sub-Micrometer Plastics Detection.

ABSTRACT: As an important trace molecular detection technique, surface-enhanced Raman scattering (SERS) has been extensively investigated, while the realization of simple, low-cost, and controllable fabrication of wafer-scale, flexible SERS-active substrates remains challenging. Here, we report a facile, low-cost strategy for fabricating wafer-scale SERS substrates based on Ag-TiO₂ nanoparticle-film hybrids by combining dip-coating and UV light array photo-deposition. The results show that a centimeter-scale Ag nanoparticle (AgNP) film (~20 cm × 20 cm) could be uniformly photo-deposited on both non-flexible and flexible TiO₂ substrates, with a relative standard deviation in particle size of only 5.63%. The large-scale AgNP/TiO₂ hybrids working as SERS substrates show

SUBMITTER: Kong F 

PROVIDER: S-EPMC11477886 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature