Surface Plasmon Resonance
J. Crompton1 S. Yushanov1 L.T. Gritter1 K.C. Koppenhoefer1
1AltaSim Technologies, Columbus, OH, USA
The resonance conditions for surface plasmons are influenced by the type and amount of material on a surface. Full insight into surface plasmon resonance requires quantum mechanics considerations. However, it can be also described in terms of classical electromagnetic theory by considering electromagnetic wave reflection, transmission, and absorption for the multi-layer medium. The two commonly used configurations have been analyzed using COMSOL Multiphysics to define the effect of the SPR on the electromagnetic field. The angle of resonance is sensitive to both the experimental configuration used and to the dielectric constant of the material adjacent to the metal surface. The effect of different surface and experimental configurations on the SPR response has been investigated.