Design of arbitrarily shaped concentrators based on conformally optical transformation of nonuniform rational B-spline surfaces

被引：145

作者：

Jiang, Wei Xiang ^{[1
]}

Cui, Tie Jun ^{[1
]}

Cheng, Qiang ^{[1
]}

Chin, Jessie Yao ^{[1
]}

Yang, Xin Mi ^{[1
]}

Liu, Ruopeng ^{[2
]}

Smith, David R. ^{[2
]}

机构：

[1] Southeast Univ, Dept Radio Engn, State Key Lab Millimeter Waves, Nanjing 210096, Peoples R China

[2] Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 26期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2951485

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We study the design of arbitrarily shaped electromagnetic (EM) concentrators and their potential applications. To obtain closed-form formulas of EM parameters for an arbitrarily shaped concentrator, we employ nonuniform rational B-spline (NURBS) to represent the geometrical boundary. Using the conformally optical transformation of NURBS surfaces, we propose the analytical design of arbitrarily shaped concentrators, which are composed of anisotropic and inhomogeneous metamaterials with closed-form constitutive tensors. The designed concentrators are numerically validated by full-wave simulations, which show perfectly directed EM behaviors. As one of the potential applications, we demonstrate a way to amplify plane waves using a rectangular concentrator, which is much more efficient and easier than the existing techniques. Using NURBS expands the generality of the transformation optics and could lead toward making a very general tool that would interface with commercial softwares such as 3D STUDIOMAX and MAYA. (c) 2008 American Institute of Physics.

引用

页数：3

共 11 条

[1] Nonmagnetic cloak with minimized scattering [J].

Cai, Wenshan ;

Chettiar, Uday K. ;

Kildishev, Alexander V. ;

Shalaev, Vladimir M. ;

Milton, Graeme W. .

APPLIED PHYSICS LETTERS, 2007, 91 (11)

[2] Transformation media that rotate electromagnetic fields [J].

Chen, Huanyang ;

Chan, C. T. .

APPLIED PHYSICS LETTERS, 2007, 90 (24)

[3] Full-wave simulations of electromagnetic cloaking structures [J].

Cummer, Steven A. ;

Popa, Bogdan-Ioan ;

Schurig, David ;

Smith, David R. ;

Pendry, John .

PHYSICAL REVIEW E, 2006, 74 (03)

[4]

HIGGINS JA, 1995, IEEE MICROW GUIDED W, V5, P10

[5] Controlling electromagnetic fields [J].

Pendry, J. B. ;

Schurig, D. ;

Smith, D. R. .

SCIENCE, 2006, 312 (5781) :1780-1782

[6]

Piegl L., 1996, NURBS BOOK, DOI DOI 10.1007/978-3-642-97385-7

[7] Design of electromagnetic cloaks and concentrators using form-invariant coordinate transformations of Maxwell's equations [J].

Rahm, Marco ;

Schurig, David ;

Roberts, Daniel A. ;

Cummer, Steven A. ;

Smith, David R. ;

Pendry, John B. .

PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS, 2008, 6 (01) :87-95

[8] Calculation of material properties and ray tracing in transformation media [J].

Schurig, D. ;

Pendry, J. B. ;

Smith, D. R. .

OPTICS EXPRESS, 2006, 14 (21) :9794-9804

[9] Metamaterial electromagnetic cloak at microwave frequencies [J].

Schurig, D. ;

Mock, J. J. ;

Justice, B. J. ;

Cummer, S. A. ;

Pendry, J. B. ;

Starr, A. F. ;

Smith, D. R. .

SCIENCE, 2006, 314 (5801) :977-980

[10]

Sovero EA, 1996, IEEE MTT-S, P1111, DOI 10.1109/MWSYM.1996.511224

← 1 2 →