Changed pattern of SERS hotspots by Ag nanoparticle growth under magnetic field for biomarker detection

Abstract

As an important marker of Hepatocellular carcinoma (HCC), AFP-L3 has attracted attention. In this study, the surface-plasmon-assisted Ag nanoparticles symmetrical growth technology under magnetic field is used to fabricate the six-nanohole nanojar array containing Ag nanoparticles as the sensing substrate. The displacement of SERS signal of the optimized structure is used to detect HCC marker AFP-L3. This method has good stability, high accuracy and has great potential in the early diagnosis of HCC.