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.

Three-dimensional optical metamaterial with a negative refractive index

PDF] Negative Refractive Index Metamaterials: Principles and Applications

Negative refractive index metamaterials - ScienceDirect

Negative-Index Metamaterials

Zero-Index Material Generates Nonlinear Light, Research & Technology, Dec 2013

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

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

Negative index metamaterial in GHz range using wire pairs – Ansys Optics

Negative-index metamaterial - Wikipedia