Surface-enhanced raman scattering substrates

摘要

A method for the formation of surface enhanced Raman scattering substrates. The method produces thin substrates that have a nanoparticle ink deposited thereon. The nanoparticle ink may be any suitable nanoparticle ink such as silver, gold or copper nanoparticle ink which includes stabilized nanoparticles. The substrates and nanoparticle ink undergo a first step of heating in order to remove liquid vehicle from the ink The substrates and nanoparticles then undergo a second step of heating for an amount of time sufficient to remove a substantial portion of the stabilizer and provide a fractal aggregate nanoparticle layer on the substrate having a certain resistivity or conductivity suitable for Raman scattering. This creates SERS substrates with enhanced amplification properties.

主权项

1. A surface-enhanced Raman scattering substrate comprising:
a substrate; and a fractal aggregate of nanoparticles formed from a nanoparticle ink comprising a material which enhances Raman scattering located on a surface of said substrate and wherein the nanoparticles provide an amplification of the Raman scattering signal of from about 1×103 to about 2.5×1010.