High-Throughput Fabrication of Triangular Nanogap Arrays for Surface-Enhanced Raman Spectroscopy
Sihai Luo, Andrea Mancini, Feng Wang, Junyang Liu, Stefan A. Maier, John C. de Mello
Abstract
relative to a thin gold film. Using the nanogap arrays, methylene blue dye molecules can be detected at concentrations as low as 1 pM, while adenine biomolecules can be detected down to 100 pM. We further show that it is possible to achieve sensitive SERS detection on binary-metal nanogap arrays containing gold and platinum, potentially extending SERS detection to the investigation of reactive species at platinum-based catalytic and electrochemical surfaces.
Topics & Concepts
Materials scienceRaman spectroscopyNanotechnologyFabricationRaman scatteringSurface-enhanced Raman spectroscopyBiomoleculeOptoelectronicsOpticsMedicinePhysicsPathologyAlternative medicineGold and Silver Nanoparticles Synthesis and ApplicationsAdvanced biosensing and bioanalysis techniquesPlasmonic and Surface Plasmon Research