Surface plasmon resonance sensor system

摘要

The present invention relates to a sensor system for measuring the changes of refractive index and for the thickness variation of a sample medium, and the variations in concentration of a liquid sample using a surface plasmon resonance (SPR) or a sensor chip constituting the surface plasmon microscope (SPM). The surface plasmon resonance sensor system comprises a sensor chip having a sensor element on which a measuring sample is located, the sensor element is composed of a first adhesion layer, a conductive thin film, a second adhesion layer and a transparent thin film sequentially stacked on a transparent substrate; a prism attached under the sensor chip; a light source for providing light to the sensor chip through the prism; and a light-detecting element for measuring variations in the refractive index caused by resonance of surface plasmon on the conductive thin film.