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The planar interface of a metal and a dielectric material can guide multiple surface-plasmon-polariton (SPP) waves—all of the same frequency, but different phase speed, attenuation rate, and spatial profiles of fields—provided that the dielectric material is periodically nonhomogeneous in the direction normal to the interface. Theoretical and experimental research during the last four years have validated...
Biomimetic nanoengineered metamaterials called chiral sculptured thin films (CSTFs) are attractive platforms for optical sensing because their porosity, morphology, and optical properties can be tailored to order. Furthermore, their ability to support more than one surface-plasmon-polariton (SPP) wave at a planar interface with a metal offers functionality beyond that associated with conventional...
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