منابع مشابه
Left-handed optical radiation torque
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متن کاملNovel Electromagnetic Radiation in Left - Handed Materials
In this thesis, Cerenkov radiation of a moving charged particle inside a Left-Handed material (LHM) is studied through both theory and numerical simulations. A LHM is a material whose permittivity and permeability have negative real parts. In the analysis of this thesis, the general theory of Cerenkov radiation was first studied for the unbounded regions filled with LHM. The physical meanings o...
متن کاملRadiation Enhancement and Radiation Suppression by a Left-handed Metamaterial
The perfect lens property of a dispersive and lossy lefthanded metamaterial disk is exploited to superimpose a source of electromagnetic radiation onto its mirror image, formed as a result of reflection from a perfect electric conductor or a perfect magnetic conductor. The superposition of a vertical wire-dipole antenna with its perfect electric conductor image results in an increase of the rad...
متن کاملOptical Limits in Left-Handed Media
This thesis determines the response of Left-Handed Media (LHM) to surface effects. A LHM half-space with a roughened interface, modelled by a graded index boundary, is shown to give rise to an analytical solution for the propagation of electromagnetic radiation through this inhomogeneous layer. Significant field localization is generated within the layer, caused by the coherent superposition of...
متن کاملExperimental verification of reversed Cherenkov radiation in left-handed metamaterial.
By using a phased electromagnetic dipole array to model a moving charged particle, we experimentally verified a reversed Cherenkov radiation in the left-handed media in the frequency range from 8.1 to 9.5 GHz. Our results demonstrate the feasibility of new types of particle detectors and radiation generators.
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ژورنال
عنوان ژورنال: Nature Photonics
سال: 2014
ISSN: 1749-4885,1749-4893
DOI: 10.1038/nphoton.2014.142