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Negative refractive index materials pdf download
The main directions of studies of materials with negative index of refraction, also called left-handed or metamaterials, are reviewed. First, the physics of the phenomenon of negative refraction and the history of this scientific branch are outlined. Then recent results of studies of photonic crystals that exhibit negative refraction. 18 Jan 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. 18 Jan Online at Abstract. 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.
Veselago4 suggested that there are materials in which the causal refractive index may be given by another branch of the root n εμ. = −. These materials, referred to as left- handed (LHM) or negative index materials, possess unique electromagnetic properties and promise novel optical devices, including a perfect lens Center for High Technology Materials and Department of Electrical and Computer En- gineering, University of New Mexico, Albuquerque, NM 2. Department of Applied Physics and Applied Mathematics, Columbia University, New. York, NY Metal-based negative refractive index materials have been. In , an artificially structured composite was shown to exhibit a negative index of refraction over a band of microwave frequencies1. This demonstration of a previously unexploited electromagnetic (EM) property proved the importance of engineered materials and has resulted in an extraordinary amount of continued.
2 Oct Negative Refractive Index in Left-Handed Materials. David R. Smith* and Norman Kroll. Department of Physics, University of California, San Diego, Gilman Drive, La Jolla, California (Received 17 May ). The real part of the refractive index n(v) of a nearly transparent and passive. 9 Feb OUTLINE. 2. • Introduction to metamaterials. • Review: index of refraction. • Theory of negative-index metamaterials. • Real negative-index materials. • Metamaterial cloaking. • Problems with negative-index metamaterials. Negative-index metamaterial or negative-index material (NIM) is a metamaterial whose refractive index for an electromagnetic wave has a negative value over some frequency range. NIMs are constructed of periodic basic parts called unit cells, which are usually significantly smaller than the wavelength of the externally .