The scientific effort to control the interaction between light and matter has grown
exponentially in the last 2 decades. This growth has been aided by the development of …

Structures with near-zero parameters (for example, media with near-zero relative permittivity
and/or relative permeability, and thus a near-zero refractive index) exhibit a number of …

Weyl semimetals are topological materials whose electron quasiparticles obey the Weyl
equation. They possess many unusual properties that may lead to new applications. This is …

Throughout the 19th and 20th century, chirality has mostly been associated with chemistry.
However, while chirality can be very useful for understanding molecules, molecules are not …

Optical chiral metamaterials have recently attracted considerable attention because they
offer new and exciting opportunities for fundamental research and practical applications …

Strong chiroptical effects recently reported result from the interaction of light with chiral
plasmonic nanostructures. Such nanostructures can be used to enhance the chiroptical …

Metamaterials, artificial composite structures with exotic material properties, have emerged
as a new frontier of science involving physics, material science, engineering and chemistry …

A zero-refractive-index metamaterial is one in which waves do not experience any spatial
phase change, and such a peculiar material has many interesting wave-manipulating …

Metasurfaces as optically thin composite layers can be modeled as electric and magnetic
surface current sheets flowing in the layer volume in the metasurface plane. In the most …

We experimentally demonstrate a chiral metamaterial exhibiting negative refractive index at
terahertz frequencies. The presence of strong chirality in the terahertz metamaterial lifts the …