Image theory for a sphere with negative permittivity
نویسندگان
چکیده
منابع مشابه
Realizing broadband electromagnetic transparency with a graded-permittivity sphere
Broadband electromagnetic transparency phenomenon is realized with a well-designed gradedpermittivity sphere, which has an extremely low scattering cross section over a wide frequency range, based on the generalized Mie scattering theory and numerical simulation in full-wave condition. The dynamic polarization cancellation is revealed by studying the variation of the polarization with respect t...
متن کاملElectrostatic resonances of a negative-permittivity hemisphere
All material supplied via Aaltodoc is protected by copyright and other intellectual property rights, and duplication or sale of all or part of any of the repository collections is not permitted, except that material may be duplicated by you for your research use or educational purposes in electronic or print form. You must obtain permission for any other use. Electronic or print copies may not ...
متن کاملSurface modes in plasmonic Bragg fibers with negative average permittivity.
We investigate surface modes in plasmonic Bragg fibers composed of nanostructured coaxial cylindrical metal-dielectric multilayers. We demonstrate that the existence of surface modes is determined by the sign of the spatially averaged permittivity of the plasmonic Bragg fiber, ε¯. Specifically, localized surface modes occur at the interface between the cylindrical core with ε¯<0 and the outermo...
متن کاملNear-field Imaging by Negative Permittivity Media
The imaging of the near field by a slab of negative permittivity medium is discussed. The performance of this flat lens is limited by the working wavenumber k0 and the slab thickness d. For k0d 0.937, the resolution of the flat lens can be smaller than the wavelength and depends logarithmically on 1/k0d. The electric field is finite everywhere, but will diverge algebraically as one reduces k0d ...
متن کاملAn Electromagnetic Trinity from “negative Permittivity” and “negative Permeability”
An electromagnetic trinity comprising vacuum, anti–vacuum, and ni-hility is postulated — after making use of materials with " negative per-mittivity " and " negative permeability " — to illuminate the structure of electromagnetic theory, at least insofar as the relationship of phase velocity with Poynting vector is concerned.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Mathematical Physics
سال: 2019
ISSN: 0022-2488,1089-7658
DOI: 10.1063/1.5080480