Abstract

Two of the main obstacles to the development of high-performance nanophotonic technologies are material losses and surface roughness. The latter has been an object of different studies in the plasmonic regime, as the surface waves are restricted to the metal interface [1][2]. In contrast, the effect of the roughness on ENZ media has been considerably less investigated. Two scenarios can arise according to the theory for the effect of roughness on these media. In the first place, the impact continuity on the normal displacement field deriving in the excitation of strong longitudinal electric field.

© 2023 IEEE