Results 11 to 20 of about 193,312 (244)
Broadband Transformation Optics Devices [PDF]
Materials, 2010 Recently we have suggested that two-dimensional broadband transformation optics devices based on metamaterial designs may be built using tapered waveguides. Here we review application of this principle to broadband electromagnetic cloaking, trapped rainbow, and novel microscopy devices.
Smolyaninova, Vera N. +3 more
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Manipulating dc currents with bilayer bulk natural materials [PDF]
, 2014 The principle of transformation optics has been applied to various wave phenomena (e.g., optics, electromagnetics, acoustics and thermodynamics). Recently, metamaterial devices manipulating dc currents have received increasing attention which usually ...
Han, Tiancheng +6 more
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Transformation Optics scheme for two-dimensional materials [PDF]
, 2014 Two dimensional optical materials, such as graphene can be characterized by a surface conductivity. So far, the transformation optics schemes have focused on three dimensional properties such as permittivity $\epsilon$ and permeability $\mu$.
Fang, Nicholas +3 more
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Nontensorial Transformation Optics
Physical Review Applied, 2016 C.G.-M. acknowledges support from Generalitat Valenciana through the VALi+d postdoctoral program (APOSTD/2014/044). Financial support for C. B. was provided by the Spanish Ministry through Projects No. FIS2011-30145-C03-01 and No. FIS2014-54800-C2-1 (with FEDER contribution), and by the Junta de Andalucia through Project No. FQM219.
García Meca, Carlos, Barceló, Carlos
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Gain-assisted transformation optics [PDF]
Optics Express, 2011 Loss severely degrades the cloaking effect of the device designed by traditional transformation. In this letter, we propose gain-assisted transformation optics to overcome the loss problem by introducing gain media into a spherical cloak. The gain media, which can amplify the electromagnetic fields, is controlled precisely to compensate the inherent ...
Han, T. +4 more
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Transformation Optics and the Geometry of Light [PDF]
, 2008 Metamaterials are beginning to transform optics and microwave technology thanks to their versatile properties that, in many cases, can be tailored according to practical needs and desires.
Leonhardt, Ulf, Philbin, Thomas G.
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Non-Euclidean cloaking for light waves [PDF]
, 2009 Non-Euclidean geometry combined with transformation optics has recently led to the proposal of an invisibility cloak that avoids optical singularities and therefore can work, in principle, in a broad band of the spectrum [U. Leonhardt and T. Tyc, Science
Chan, Che Ting +3 more
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The limits and extension of transformation optics [PDF]
, 2016 We explore an apparent limitation of transformation optics, namely that a given transformation induces polarization-dependent impedance gradients that might lead to scattering.
Kinsler, Paul, McCall, Martin
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Transformation optics based on metasurfaces [PDF]
Science Bulletin, 2019 Recently, new artificial material has been proposed to control an electromagnetic wave-metasurface, a two-dimensional metamaterial. Compared with a three-dimensional bulky metamaterial, this artificial plane material with sub-wavelength thickness greatly reduces fabrication time and mitigates fabrication complexity.
Shining Zhu, Chong Sheng, Hui Liu
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Progress towards omnidirectional transformation optics with lenses [PDF]
, 2016 We study, theoretically, omni-directional Euclidean transformation-optics (TO) devices comprising planar, light-ray-direction changing, imaging, interfaces.
Belin, Jakub +7 more
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