Synergistic coupling of titanium carbonitride nanocubes and graphene oxide for 800-fold fluorescence enhancements on smartphone based surface plasmon-coupled emission platform

High refractive index, dielectric TiCN nanocubes presenting sharp nano-edges and nano-corners interfaced with plasmonic Ag nanofilms were evaluated with and without graphene oxide nanolayer in surface plasmon-coupled emission (SPCE) substrates. The sharply directional and polarized SPCE displayed >800-fold enhancements on account of integrated hotspots presenting augmented electromagnetic fields. The obtained fluorescence enhancements were in...