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Comparison of gold- and graphene-based resonant nano-structures for terahertz metamaterials and an ultra-thin graphene-based modulator
Nian-Hai Shen, Philippe Tassin, Thomas Koschny +1
Graphene exhibits unique material properties and in electromagnetic wave technology, it raises the prospect of devices miniaturized down to the atomic length scale. Here we study s…
Dielectric Metamaterials with Toroidal Dipolar Response
Alexey A. Basharin, Maria Kafesaki, Eleftherios N. Economou +4
Toroidal multipoles are the terms missing in the standard multipole expansion; they are usually overlooked due to their relatively weak coupling to the electromagnetic fields. Here…
Graphene for terahertz applications
Philippe Tassin, Thomas Koschny, Costas M. Soukoulis
Graphene is a one-atom-thick sheet of carbon atoms arranged in a honeycomb lattice. It was first obtained by exfoliation of graphite in 2004 and has since evolved into a thriving r…
One- and two-dimensional photo-imprinted diffraction gratings for manipulating terahertz waves
Ioannis Chatzakis, Philippe Tassin, Liang Luo +5
Emerging technology based on artificial materials containing metallic structures has raised the prospect for unprecedented control of terahertz waves through components like filter…
Robust wedge demonstration to optical negative index metamaterials
Nian-Hai Shen, Thomas Koschny, Maria Kafesaki +1
A robust wedge setup is proposed to unambiguously demonstrate negative refraction for negative index metamaterials. We applied our setup to several optical metamaterials from the l…
Strong group velocity dispersion compensation with phase-engineered sheet metamaterials
Babak Dastmalchi, Philippe Tassin, Thomas Koschny +1
Resonant metamaterials usually exhibit substantial dispersion, which is considered a shortcoming for many applications. Here we take advantage of the ability to tailor the dispersi…
Large quality factor in sheet metamaterials made from dark dielectric meta-atoms
Aditya Jain, Philippe Tassin, Thomas Koschny +1
Metamaterials-or artificial electromagnetic materials-can create media with properties unattainable in nature, but mitigating dissipation is a key challenge for their further devel…