Negative refractive index
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Recent papers in Negative refractive index
In this paper, we report a tunable planar metamaterial that is designed to achieve dual-band negative refractive index response in microwave regime. Its distinctive characteristic is the usage of tuning open stub-loaded stepped-impedance... more
The race toward engineering metamaterials comprising of negative refractive indexes in the optical range started with the realization of negative-index materials for gigahertz frequencies six years ago. Sheer miniaturization of the... more
A double-periodic array of pairs of parallel gold nanorods is shown to have a negative refractive index in the optical range. Such behavior results from the plasmon resonance in the pairs of nanorods for both the electric and the magnetic... more
In this investigation, anatase TiO 2 thin films were grown by radio frequency magnetron sputtering on glass substrates at a high sputtering pressure and room temperature. The anatase films were then annealed at 300-600 °C in air for a... more
The dispersive part of the refractive index, 1 − δ , of vanadium is determined by measuring the angular dependence of the Bragg peakat the V L 2 , 3 edge energy region using a Fe/V superlattice. This X-ray scattering technique... more
The properties and characteristics of a recently proposed anisotropic metamaterial based upon layered arrays of tightly coupled pairs of “dogbone” shaped stripe conductors have been explored in detail. It has been found that a... more
Metamaterials are structures that provide electromagnetic properties not found in naturally occurring media; properties such as negative index of refraction, negative permittivity, or negative permeability. Since the appearance of... more
We study linear guided waves propagating in a slab waveguide made up of a negative-refractive-index material, the so-called left-handed waveguide. We reveal that the guided waves in left-handed waveguides possess a number of peculiar... more
One of the most important modern problems in modern electromagnetics is a design and study of negative index metamaterials that may enable sub-wavelength imaging at optical frequencies. Plasmonic periodic metal-dielectric nanostructures... more
Some new band gaps are found in 1D photonic crystals (1D PC) composed of metamaterials (including negative-μ materials, negative-ε materials and negative refractive index materials). These band gaps are investigated by using the transfer... more