Negative Index Materials
نویسندگان
چکیده
and co-workers use a nanotransfer printing technique to fabricate large-area visible 3D negative index metamaterials. Alternating silver and dielectric layers are printed over a large area on a fl exible substrate, and deposition conditions are introduced such that nearly ideal geometries with excellent optical properties are obtained.
منابع مشابه
Voltage-Controlled Negative Refractive Index in Vertically Coupled Quantum Dot Systems
We demonstrate that voltage-controlled negative refractive index can be obtained in self-organized InAs quantum dot systems. As the bias voltage is changed, the refractive index can be adjusted and controlled continuously from negative to positive and simultaneously the loss of light in the system will be small. The single-negative index materials and the double-negative index materials can be ...
متن کاملPhysics of negative refractive index materials
In the past few years, new developments in structured electromagnetic materials have given rise to negative refractive index materials which have both negative dielectric permittivity and negative magnetic permeability in some frequency ranges. The idea of a negative refractive index opens up new conceptual frontiers in photonics. One much-debated example is the concept of a perfect lens that e...
متن کامل. cl as s - ph ] 2 A ug 2 00 2 Spectral response of Cantor multilayers made of materials with negative refractive index
Whereas Cantor multilayers made of an isotropic dielectric–magnetic material with positive refractive index will show power–law characteristics, low–order Cantor multilayers made of materials with negative refractive index will not exhibit the power– law nature. A reason for this anomalous behavior is presented.
متن کاملOptical negative refraction by four-wave mixing in thin metallic nanostructures.
The law of refraction first derived by Snellius and later introduced as the Huygens-Fermat principle, states that the incidence and refracted angles of a light wave at the interface of two different materials are related to the ratio of the refractive indices in each medium. Whereas all natural materials have a positive refractive index and therefore exhibit refraction in the positive direction...
متن کاملPhotorealistic images of objects in effective negative-index materials.
Using a ray-tracing approach, we calculate photorealistic images and simple movies of objects in a material with negative index of refraction. Our results show several surprising and drastic effects, for example reversal of apparent object velocity, extreme distortions of object shape, and even apparent loss of connectivity of simple objects. The material presented aims at giving both researche...
متن کاملNegative refraction without negative index in metallic photonic crystals.
It is shown that certain metallic photonic crystals can enable negative refraction and subwavelength imaging without relying on a negative effective index. These metallic structures are very simple in design and appear straightforward for fabrication. Their unusual electromagnetic response should provide an interesting comparison with the metallic left-handed materials.
متن کامل