Patent ID: 8988679
Filing Date: 2015-03-24
Classification: B01J,B82Y,C40B,G01N,Y10S

Abstract:
1. A method of producing a surface enhanced Raman scattering (SERS) spectrum comprising: providing a first SERS active nanoparticle which will absorb a photon at a first wavelength and emit a Raman shifted photon at a second wavelength that is different from the first wavelength; providing a second SERS active nanoparticle which will absorb a photon at the second wavelength and emit a Raman shifted photon at a third wavelength that is different from the first wavelength and the second wavelength; bringing the first and second SERS active nanoparticles proximate to one another; and illuminating the first SERS active nanoparticle at the first wavelength causing the first SERS active nanoparticle to emit a Raman shifted photon at the second wavelength which is absorbed by the second SERS active nanoparticle causing emission of a second Raman shifted photon at the third wavelength.