Backward-wave media (aliases: Veselago media, "left-handed" media, double negative media, media with negative material parameters)

We have been working for some time on t material modelling, characterization, realization possibilities, electromagnetic phenomena, and potential applications.

Backward-wave media? What is it?

We have found that negative refraction can be realized in chiral media near a resonance of the refractive index. This means that it is not nesessary to have negative values of the material parameters, which is very important for optical applications, where realization of negative permeability is very problematic. See a short explanation here.

A lot of material about negative refraction and related issues can be found here: Sergei Tretyakov, Analytical Modeling in Applied Electromagnetics, Norwood, MA: Artech House, 2003.

See also our review paper: S.A. Tretyakov, I.S. Nefedov, C.R. Simovski, S.I. Maslovski, Modelling and microwave properties of artificial materials with negative parameters, in Advances in Electromagnetics of Complex Media and Metamaterials, S. Zouhdi, A. Sihvola, and M. Arsalane (editors), NATO Series II: Mathematics, Physics, and Chemistry, Vol. 89, Kluwer Academic Publishers, 2002, pp. 99-122.

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