ACS Sensors, Год журнала: 2024, Номер 9(2), С. 849 - 859

Опубликована: Янв. 25, 2024

Noble metal nanoparticle (NMP)-based composite substrates have garnered significant attention as a highly promising technique for surface-enhanced Raman scattering (SERS) in diverse scientific disciplines because their remarkable ability to amplify and functionalize signals has positioned them valuable tools molecular detection. However, optimizing the size distribution of NMPs not received sufficient emphasis challenges associated with precise control deposition modulation reducing rates during growth. In this research, we achieved optimized spatial patterns AgNWs on electrospun poly(vinylidene fluoride) (PVDF) nanofibers by utilizing polydopamine (PDA) layer mild controllable reduction mediator, which density could be relatively precisely manipulated, achieving dense effective "hot spots". On other hand, harnessing inherent piezoelectric properties PVDF further boosted LSPR effect SERS test, forming flexible dual-enhancing substrate excellent sensitivity. addition addressing structural aspects, exploiting synergistic systems capable transferring external energy or forces enhance performances presents compelling avenue broaden practical applications SERS. The dual-enhanced an exceptional enhancement factor (EF) 1.05 × 108 low detection limit (LOD) 10–10 M test. This study focuses integrating polymer develop sensitivity practicality. findings provide insights into controllably depositing fibers hold implications development sensitive across various applications.

Язык: Английский