Plamonics for Biomolecular Sensors and THz Metamaterial Waveguides (Near and Far-Field Interfaces to DNA. Guided Nanostructures from RF to Lightwave: Exploiting the Spectrum).

摘要

In THz frequencies, the textured surfaces on a subwavelength scale can support surface bound modes named spoofed surface plasmon polariton (SSPP) modes. Such modes mimic the common optical surface plasmon mode traveling at dielectric-metal interface, and therefore have similar mode profiles with strongly confined field and localized energy distribution. Specifically, when SSPP architectures are combined with dielectric loadings with distinctive material parameters, sample differentiation can be realized by tracking the shifted spectral output of the structure, making it a good candidate for various sensing applications. Furthermore, SSPP concept can be applied to various signal-processing components such as frequency selective filters and multiplexers.