Demonstration of Surface-Enhanced Raman Scattering by Tunable, Plasmonic Gallium Nanoparticles

摘要

Gallium, a standard metal used for optoelectronic devices, represents an alternative plasmonic material with attributes superior to traditional nanostructured silver and gold. Here we present the first demonstration of plasmonic Ga nanoparticles (NPs) as substrates for surface-enhanced Raman scattering (SERS).rnThe theoretical treatment by Zeman and Schatz revealed the potential of Ga to support strong surface fields. Plasmonic gallium NPs are promising for an array of applications because of their broad plasmon tunability, stability across a wide temperature range, excellent plasmon resiliency when oxidized, and simplicity of deposition even at room temperature.