Proceedings ArticleDOI
An aberration-free lens with zero F-number
TLDR
In this paper, the Luneberg lens index profile was used for far-field imaging of (infinitely) distant objects. And they applied the transformation design method to the problem of far field imaging.About:
This article is published in Information Systems.The article was published on 2010-06-07. It has received 25 citations till now. The article focuses on the topics: Lens (optics) & F-number.read more
Citations
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Journal ArticleDOI
Flat Luneburg Lens via Transformation Optics for Directive Antenna Applications
TL;DR: In this paper, a 3D-transformed microwave Luneburg lens antenna is presented, which demonstrates high directivity, low side-lobe level, broadband response and steerable capabilities.
Journal ArticleDOI
Broadband single molecule SERS detection designed by warped optical spaces
TL;DR: An approach based on warped spaces that offers a strategy to manipulate hotspots of metallic nanostructures, resulting in large broadband enhancements in both the magnitude and the volume size is introduced.
Journal ArticleDOI
A Flat Dual-Polarized Transformation-Optics Beamscanning Luneburg Lens Antenna Using PCB-Stacked Gradient Index Metamaterials
Yuanyan Su,Zhi Ning Chen +1 more
TL;DR: In this article, a flat compact dual-polarized Luneburg lens antenna is proposed and implemented using the printed-circuit-board-stacked gradient-index metamaterials for beam scanning and multibeam applications at X-bands.
Journal ArticleDOI
Enhancing imaging systems using transformation optics.
TL;DR: A coordinate transformation is applied to flatten a Maxwell fish-eye lens, forming a near-perfect relay lens, and also flatten the focal surface associated with a conventional refractive lens, such that the system exhibits an ultra-wide field-of-view with reduced aberration.
Journal ArticleDOI
A Grounded Slim Luneburg Lens Antenna Based on Transformation Electromagnetics
Angela Demetriadou,Yang Hao +1 more
TL;DR: In this paper, a slim Luneburg lens is proposed, which allows the lens to be incorporated into an antenna system through transformation electromagnetics, and the transformed lens is then discretized and fed by a patch antenna to form a high-directive antenna system with low sidelobe levels and steering capabilities.
References
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Journal ArticleDOI
Negative Refraction Makes a Perfect Lens
TL;DR: The authors' simulations show that a version of the lens operating at the frequency of visible light can be realized in the form of a thin slab of silver, which resolves objects only a few nanometers across.
Journal ArticleDOI
Controlling Electromagnetic Fields
TL;DR: This work shows how electromagnetic fields can be redirected at will and proposes a design strategy that has relevance to exotic lens design and to the cloaking of objects from electromagnetic fields.
Journal ArticleDOI
Metamaterial Electromagnetic Cloak at Microwave Frequencies
David Schurig,Jack J. Mock,B.J. Justice,Steven A. Cummer,John B. Pendry,Anthony F. Starr,David R. Smith +6 more
TL;DR: This work describes here the first practical realization of a cloak of invisibility, constructed with the use of artificially structured metamaterials, designed for operation over a band of microwave frequencies.
Journal ArticleDOI
Optical Hyperlens: Far-field imaging beyond the diffraction limit.
TL;DR: In this article, an approach to far-field optical imaging beyond the diffraction limit is proposed, which allows image magnification, is robust with respect to material losses and can be fabricated by adapting existing metamaterial technologies in a cylindrical geometry.
Book
A first course in general relativity
TL;DR: The second edition of this widely-used textbook as mentioned in this paper provides the first step into general relativity for undergraduate students with a minimal background in mathematics, and includes a revised chapter on relativistic stars, including new information on pulsars.