Patent ID: 7397559
Filing Date: 2008-07-08
Classification: G01N

Abstract:
1. An apparatus for spectroscopic analysis of a plurality of analyte molecules, comprising: a metallic film near which a plurality of analyte molecules is disposed; a first medium on a first side of said metallic film, a second medium on a second side of said metallic film, the second medium being of higher refractive index than the first medium; a radiation source providing excitation radiation that propagates through said second medium toward said metallic film, said second medium and said metallic film being positioned in evanescent communication with respect to said excitation radiation; and a radiation detector detecting Raman radiation emitted from said analyte molecules; wherein said metallic film comprises lithographically patterned features designed to intensify surface plasmon resonance along said metallic film to promote said emission of said Raman radiation from said analyte molecules.