Electromagnetic surface modes

TL;DR: A surface plasmon polariton (SPP) is an electromagnetic excitation existing on the surface of a good metal, whose electromagnetic field decays exponentially with distance from the surface.

TL;DR: In this article, a hybrid optical waveguide is proposed to confine surface plasmon polaritons over large distances using a dielectric nanowire separated from a metal surface by a nanoscale gap.

TL;DR: A new class of ultrasonic metamaterials consisting of an array of subwavelength Helmholtz resonators with designed acoustic inductance and capacitance with an effective dynamic modulus with negative values near the resonance frequency is reported.

TL;DR: The calculations indicate that the maximum enhancement factor achievable through electromagnetics is of the order 10(11), which can qualitatively explain why only very few surface sites seem to contribute to the measured signal in single-molecule SERS experiments.