dorsal/arxiv
View SchemaFull-wave simulations of electromagnetic cloaking structures
| Authors | Steven A. Cummer, Bogdan-Ioan Popa, David Schurig, David R. Smith, John Pendry |
|---|---|
| Categories | |
| ArXiv ID | physics/0607242 |
| URL | https://arxiv.org/abs/physics/0607242 |
| DOI | 10.1103/PhysRevE.74.036621 |
| Journal | PHYSICAL REVIEW E 74, 036621, 2006 |
Abstract
Based on a coordinate transformation approach, Pendry {\it et al.} have reported electromagnetically anisotropic and inhomogeneous shells that, in theory, completely shield an interior structure of arbitrary size from electromagnetic fields without perturbing the external fields. We report full-wave simulations of the cylindrical version of this cloaking structure using ideal and nonideal (but physically realizable) electromagnetic parameters in an effort to understand the challenges of realizing such a structure in practice. The simulations indicate that the performance of the electromagnetic cloaking structure is not especially sensitive to modest permittivity and permeability variations. This is in contrast to other applications of engineered electromagnetic materials, such as subwavelength focusing using negative refractive index materials. The cloaking performance degrades smoothly with increasing loss, and effective low-reflection shielding can be achieved with a cylindrical shell composed of an eight (homogeneous) layer approximation of the ideal continuous medium.
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"abstract": "Based on a coordinate transformation approach, Pendry {\\it et al.} have\nreported electromagnetically anisotropic and inhomogeneous shells that, in\ntheory, completely shield an interior structure of arbitrary size from\nelectromagnetic fields without perturbing the external fields. We report\nfull-wave simulations of the cylindrical version of this cloaking structure\nusing ideal and nonideal (but physically realizable) electromagnetic parameters\nin an effort to understand the challenges of realizing such a structure in\npractice. The simulations indicate that the performance of the electromagnetic\ncloaking structure is not especially sensitive to modest permittivity and\npermeability variations. This is in contrast to other applications of\nengineered electromagnetic materials, such as subwavelength focusing using\nnegative refractive index materials. The cloaking performance degrades smoothly\nwith increasing loss, and effective low-reflection shielding can be achieved\nwith a cylindrical shell composed of an eight (homogeneous) layer approximation\nof the ideal continuous medium.",
"arxiv_id": "physics/0607242",
"authors": [
"Steven A. Cummer",
"Bogdan-Ioan Popa",
"David Schurig",
"David R. Smith",
"John Pendry"
],
"categories": [
"physics.optics"
],
"doi": "10.1103/PhysRevE.74.036621",
"journal_ref": "PHYSICAL REVIEW E 74, 036621, 2006",
"title": "Full-wave simulations of electromagnetic cloaking structures",
"url": "https://arxiv.org/abs/physics/0607242"
},
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