Finite-difference time-domain modeling of electromagnetic cloaks

Christos Argyropoulos; Yan Zhao; Efthymios Kallos; Yang Hao

doi:10.1007/978-1-4419-0573-4_7

Finite-difference time-domain modeling of electromagnetic cloaks

Christos Argyropoulos, Yan Zhao, Efthymios Kallos, Yang Hao

Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

A radially dependent dispersive finite-difference time-domain (FDTD) method is proposed to simulate electromagnetic cloaking devices. The Drude dispersion model is applied to model the electromagnetic characteristics of the cloaking medium. Both lossless and lossy cloaking materials are examined and their operating bandwidth investigated. It is demonstrated that the perfect invisibility of electromagnetic cloaks is only available for lossless metamaterials and within an extremely narrow frequency band. Spherical cloaks are simulated and investigated with a parallel dispersive FDTD technique. Finally, ground-plane cloaking devices are examined and analyzed with non-orthogonal and orthogonal FDTD methods.

Original language	English (US)
Title of host publication	Metamaterials
Subtitle of host publication	Theory, Design, and Applications
Publisher	Springer US
Pages	115-153
Number of pages	39
ISBN (Print)	9781441905727
DOIs	https://doi.org/10.1007/978-1-4419-0573-4_7
State	Published - 2010

All Science Journal Classification (ASJC) codes

General Engineering

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10.1007/978-1-4419-0573-4_7

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title = "Finite-difference time-domain modeling of electromagnetic cloaks",

abstract = "A radially dependent dispersive finite-difference time-domain (FDTD) method is proposed to simulate electromagnetic cloaking devices. The Drude dispersion model is applied to model the electromagnetic characteristics of the cloaking medium. Both lossless and lossy cloaking materials are examined and their operating bandwidth investigated. It is demonstrated that the perfect invisibility of electromagnetic cloaks is only available for lossless metamaterials and within an extremely narrow frequency band. Spherical cloaks are simulated and investigated with a parallel dispersive FDTD technique. Finally, ground-plane cloaking devices are examined and analyzed with non-orthogonal and orthogonal FDTD methods.",

author = "Christos Argyropoulos and Yan Zhao and Efthymios Kallos and Yang Hao",

year = "2010",

doi = "10.1007/978-1-4419-0573-4_7",

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T1 - Finite-difference time-domain modeling of electromagnetic cloaks

AU - Argyropoulos, Christos

AU - Zhao, Yan

AU - Kallos, Efthymios

AU - Hao, Yang

PY - 2010

Y1 - 2010

N2 - A radially dependent dispersive finite-difference time-domain (FDTD) method is proposed to simulate electromagnetic cloaking devices. The Drude dispersion model is applied to model the electromagnetic characteristics of the cloaking medium. Both lossless and lossy cloaking materials are examined and their operating bandwidth investigated. It is demonstrated that the perfect invisibility of electromagnetic cloaks is only available for lossless metamaterials and within an extremely narrow frequency band. Spherical cloaks are simulated and investigated with a parallel dispersive FDTD technique. Finally, ground-plane cloaking devices are examined and analyzed with non-orthogonal and orthogonal FDTD methods.

AB - A radially dependent dispersive finite-difference time-domain (FDTD) method is proposed to simulate electromagnetic cloaking devices. The Drude dispersion model is applied to model the electromagnetic characteristics of the cloaking medium. Both lossless and lossy cloaking materials are examined and their operating bandwidth investigated. It is demonstrated that the perfect invisibility of electromagnetic cloaks is only available for lossless metamaterials and within an extremely narrow frequency band. Spherical cloaks are simulated and investigated with a parallel dispersive FDTD technique. Finally, ground-plane cloaking devices are examined and analyzed with non-orthogonal and orthogonal FDTD methods.

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SP - 115

EP - 153

BT - Metamaterials

PB - Springer US

ER -

Finite-difference time-domain modeling of electromagnetic cloaks

Abstract

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