SURFACE-ENHANCED RAMAN SCATTERING ELEMENT

摘要

A SERS element 3 comprises a substrate 4; a fine structure part 7 formed on a front face 4a of the substrate 4 and having a plurality of pillars 11; and a conductor layer 6 formed on the fine structure part 7 and constituting an optical function part 10 for generating surface-enhanced Raman scattering. The conductor layer 6 has a base part formed along the front face 4a of the substrate 4 and a plurality of protrusions protruding from the base part at respective positions corresponding to the pillars 11. The base part and the protrusions form a plurality of gaps G in the conductor layer 6, each of the gaps G having an interstice gradually decreasing in a direction perpendicular to the projecting direction of the pillar 11.