Electromagnetic waves: Negative refraction by photonic crystals.
Ertugrul Cubukcu,Koray Aydin,Ekmel Ozbay,Stavroula Foteinopoulou,Costas M. Soukoulis,Costas M. Soukoulis +5 more
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TLDR
This experimental verification of negative refraction of electromagnetic waves in a two-dimensional dielectric photonic crystal that has a periodically modulated positive permittivity and a permeability of unity is demonstrated.Abstract:
Materials that can bend light in the opposite direction to normal ('left-handed' materials) reverse the way in which refraction usually works — this negative refractive index is due to simultaneously negative permeability and permittivity1,2,3. Here we demonstrate negative refraction of electromagnetic waves in a two-dimensional dielectric photonic crystal that has a periodically modulated positive permittivity and a permeability of unity4,5,6. This experimental verification of negative refraction is a step towards the realization of a 'superlens' that will be able to focus features smaller than the wavelength of light.read more
Citations
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Controlling Electromagnetic Fields
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Metamaterials and negative refractive index.
TL;DR: Recent advances in metamaterials research are described and the potential that these materials may hold for realizing new and seemingly exotic electromagnetic phenomena is discussed.
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A Chiral Route to Negative Refraction
TL;DR: The introduction of a single chiral resonance leads to negative refraction of one polarization, resulting in improved and simplified designs of negatively refracting materials and opening previously unknown avenues of investigation in this fast-growing subject.
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Superlenses to overcome the diffraction limit.
Xiang Zhang,Zhaowei Liu +1 more
TL;DR: The physics of such superlenses and the theoretical and experimental progress in this rapidly developing field ofificially engineered metamaterials are reviewed.
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Physics of negative refractive index materials
TL;DR: In this paper, the authors review the fundamental concepts and ideas of negative refractive index materials and present the ideas of meta-materials that enable the design of new materials with a negative dielectric permittivity, negative magnetic permeability, and negative fringes.
References
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TL;DR: In this article, the propagation of electromagnetic waves and X-ray diffraction of X rays in crystals are discussed. But they do not consider the effects of superconductivity on superconducting conductors.
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Experimental Verification of a Negative Index of Refraction
TL;DR: These experiments directly confirm the predictions of Maxwell's equations that n is given by the negative square root ofɛ·μ for the frequencies where both the permittivity and the permeability are negative.
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Photonic Crystals: Molding the Flow of Light
TL;DR: In this paper, the authors developed the theoretical tools of photonics using principles of linear algebra and symmetry, emphasizing analogies with traditional solid-state physics and quantum theory, and investigated the unique phenomena that take place within photonic crystals at defect sites and surfaces, from one to three dimensions.
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Magnetism from conductors and enhanced nonlinear phenomena
TL;DR: In this paper, it was shown that microstructures built from nonmagnetic conducting sheets exhibit an effective magnetic permeability /spl mu/sub eff/, which can be tuned to values not accessible in naturally occurring materials.
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Theory of light propagation in strongly modulated photonic crystals: Refractionlike behavior in the vicinity of the photonic band gap
TL;DR: In this article, the authors demonstrate that light propagation in strongly modulated two-dimensional (2D)/3D photonic crystals becomes refractionlike in the vicinity of the photonic bandgap.