85 citations · 140 across the 5 of their papers we have counts for
5 papers
Light scattering by a metallic nanoparticle coated with a nematic liquid crystal
Vassilios Yannopapas, Nikolaos G. Fytas, Vicky Kyrimi +3
We study the optical properties of gold nanoparticles coated with a nematic liquid crystal whose director field is distributed around the nanoparticle according to the anchoring co…
Dynamic Effective Medium Theory for Two-Dimensional Non-Magnetic Metamaterial Lattices using Multipole Expansion
Ioannis Chremmos, Efthymios Kallos, Melpomeni Giamalaki +2
We present a formulation for deriving effective medium properties of infinitely periodic two-dimensional metamaterial lattice structures beyond the static and quasi-static limits.…
Dispersive Cylindrical Cloaks under Non-Monochromatic Illumination
Christos Argyropoulos, Efthymios Kallos, Yang Hao
Transformation-based cylindrical cloaks and concentrators are illuminated with non-monochromatic waves and unusual effects are observed with interesting potential applications. The…
Ground-Plane Quasi-Cloaking for Free Space
Efthymios Kallos, Christos Argyropoulos, Yang Hao
Ground-plane cloak designs are presented, which minimize scattering of electromagnetic radiation from metallic objects in the visible spectrum. It is showed that simplified ground-…
Manipulating the Loss in Electromagnetic Cloaks for Perfect Wave Absorption
Christos Argyropoulos, Efthymios Kallos, Yan Zhao +1
We examine several ways to manipulate the loss in electromagnetic cloaks, based on transformation electromagnetics. It is found that, by utilizing inherent electric and magnetic lo…