Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Justin G. Pollock"'
Publikováno v:
IEEE Access, Vol 8, Pp 2983-2994 (2020)
This paper presents analytical and numerical investigations of a 3D cylindrical metamaterial shell possessing a cylindrically anisotropic permeability that is excited by a finite-sized electric line source. A comprehensive field analysis of the syste
Externí odkaz:
https://doaj.org/article/df3f11ebb50044bab7be8fe9afe8eab2
Publikováno v:
IEEE Access, Vol 8, Pp 2983-2994 (2020)
This paper presents analytical and numerical investigations of a 3D cylindrical metamaterial shell possessing a cylindrically anisotropic permeability that is excited by a finite-sized electric line source. A comprehensive field analysis of the syste
Autor:
Justin G. Pollock, Ashwin K. Iyer
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 10:1491-1494
This letter presents a cylindrical negative-refractive-index transmission-line (NRI-TL) metamaterial composed of radially oriented NRI-TL layers. This arrangement introduces radially inhomogeneous and anisotropic effective permeability and permittivi
Publikováno v:
Optics express. 23(16)
Extraordinary transmission (ET) through a periodic array of subwavelength apertures on a perfect metallic screen has been studied extensively in recent years, and has largely been attributed to diffraction effects, for which the periodicity of the ap
Autor:
Ashwin K. Iyer, Justin G. Pollock
Publikováno v:
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting.
This paper presents the design of a metamaterial-lined circular OEWG probe antenna operating over 37% below its natural cutoff frequency. The metamaterial liner possesses epsilon-negative and near-zero properties and is implemented as a stack of reac
Publikováno v:
2015 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium).
In the optical regime, the phenomenon of extraordinary transmission (EOT) through subwavelength apertures has been attributed to the interaction of surface plasmons formed at the interface between two media. This enhanced transmission is also evident
Autor:
Ashwin K. Iyer, Justin G. Pollock
This paper presents experimental verification of below-cutoff transmission through miniaturized waveguides whose interior is coated with a thin anisotropic metamaterial liner possessing epsilon-negative and near-zero (ENNZ) properties. These liners a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e42f952c198167d3214f19cc04b7dc7f
Autor:
Justin G. Pollock, Ashwin K. Iyer
Publikováno v:
2014 IEEE Antennas and Propagation Society International Symposium (APSURSI).
This paper investigates the miniaturization of circular open-ended waveguide (OEWG) probe antennas by lining their interior with thin epsilon-negative-and-near-zero (ENNZ) metamaterial liners. Comparisons are drawn between the radiation characteristi
Publikováno v:
12th International Conference on Fiber Optics and Photonics.
A nanoporous alumina microtube with radially emanating nanopores or plasmonic nanocylinders creates a structural anisotropy and makes possible anisotropic optical fibers with mode structure and properties unattainable hitherto in step-index or photon
Internal physical structure can drastically modify the properties of waveguides: photonic crystal fibers are able to confine light inside a hollow air core by Bragg scattering from a periodic array of holes, while metamaterial loaded waveguides for m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0ac2ff096aec9e4e927fd437e06c169