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Surface Plasmon Resonance Biosensors Based On High-Index Dielectric Metal-Insulator-Metal Structures, Sarah Clark
Surface Plasmon Resonance Biosensors Based On High-Index Dielectric Metal-Insulator-Metal Structures, Sarah Clark
WWU Graduate School Collection
Surface Plasmon Resonance (SPR) is the phenomenon in which an incident electromagnetic wave couples to charge density oscillations on a metal surface.The resulting excitation, known as a surface plasmon polariton (SPP), will propagate along the metal-dielectric interface. SPR biosensors monitor protein binding interactions in real time, which lead to changes in the refractive index, thereby altering the SPP excitation conditions. Recently, we have designed a structure that supports guided-wave plasmon polariton modes (GW-PPMs), a novel type of plasmonic excitation that demonstrates increased propagation lengths compared to those of traditional SPPs in certain regions of phase space. Because it has been …