PHOTONIC FRONTIERS: NEGATIVE-INDEX-MATERIALS: Negative-indexmaterials are on positive track

Fabrication of three-dimensional metamaterials with negative refractive index at optical wavelengths has opened the way to dramatic new types of optics, such as “superlenses.

All-angle reflectionless negative refraction with ideal photonic Weyl metamaterials

Negative-index metamaterial - Wikipedia

PHOTONIC FRONTIERS: METAMATERIALS AND TRANSFORMATION OPTICS: Newest metamaterials promise customized optical properties

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Three-dimensional optical metamaterial with a negative refractive index

Equivalence between positive and negative refractive index materials in electrostatic cloaks

Negative radiation pressure in metamaterials explained by light-driven atomic mass density rarefication waves

Negative refractive index metamaterials - ScienceDirect

Negative Index Metamaterial - an overview

Negative radiation pressure in metamaterials explained by light-driven atomic mass density rarefication waves

Optical negative-index metamaterials