Extremely Thin Dielectric Metasurface for Carpet Cloaking

被引:65
作者
Hsu, Li Yi [1 ]
Lepetit, Thomas [1 ]
Kante, Boubacar [1 ]
机构
[1] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA
关键词
METAMATERIALS; FREQUENCIES;
D O I
10.2528/PIER15032005
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We demonstrate a novel and simple geometrical approach to cloaking a scatterer on a ground plane. We use an extremely thin dielectric metasurface to reshape the wavefronts distorted by a scatterer in order to mimic the reflection pattern of a flat ground plane. To achieve such carpet cloaking, the reflection angle has to be equal to the incident angle everywhere on the scatterer. We use a graded metasurface and calculate the required phase gradient to achieve cloaking. Our metasurface locally provides additional phase to the wavefronts to compensate for the phase difference amongst light paths induced by the geometrical distortion. We design our metasurface in the microwave range using highly sub-wavelength dielectric resonators. We verify our design by full-wave time-domain simulations using micro-structured resonators and show that results match theory very well. This approach can be applied to hide any scatterer under a metasurface of class C-1 (first derivative continuous) on a ground plane not only in the microwave regime, but also at higher frequencies up to the visible.
引用
收藏
页码:33 / 40
页数:8
相关论文
共 28 条
[1]   Multifrequency optical invisibility cloak with layered plasmonic shells [J].
Alu, Andrea ;
Engheta, Nader .
PHYSICAL REVIEW LETTERS, 2008, 100 (11)
[2]   Optical cloaking with metamaterials [J].
Cai, Wenshan ;
Chettiar, Uday K. ;
Kildishev, Alexander V. ;
Shalaev, Vladimir M. .
NATURE PHOTONICS, 2007, 1 (04) :224-227
[3]   Transformation media that rotate electromagnetic fields [J].
Chen, Huanyang ;
Chan, C. T. .
APPLIED PHYSICS LETTERS, 2007, 90 (24)
[4]   Electromagnetic wormholes and virtual magnetic monopoles from metamaterials [J].
Greenleaf, Allan ;
Kurylev, Yaroslav ;
Lassas, Matti ;
Uhlmann, Gunther .
PHYSICAL REVIEW LETTERS, 2007, 99 (18)
[5]   An Overview of the Theory and Applications of Metasurfaces: The Two-Dimensional Equivalents of Metamaterials [J].
Holloway, Christopher L. ;
Kuester, Edward F. ;
Gordon, Joshua A. ;
O'Hara, John ;
Booth, Jim ;
Smith, David R. .
IEEE ANTENNAS AND PROPAGATION MAGAZINE, 2012, 54 (02) :10-35
[6]   Negative magnetic permeability in the visible light region [J].
Ishikawa, A ;
Tanaka, T ;
Kawata, S .
PHYSICAL REVIEW LETTERS, 2005, 95 (23)
[7]   Design of arbitrarily shaped concentrators based on conformally optical transformation of nonuniform rational B-spline surfaces [J].
Jiang, Wei Xiang ;
Cui, Tie Jun ;
Cheng, Qiang ;
Chin, Jessie Yao ;
Yang, Xin Mi ;
Liu, Ruopeng ;
Smith, David R. .
APPLIED PHYSICS LETTERS, 2008, 92 (26)
[8]   Invisibility cloak without singularity [J].
Jiang, Wei Xiang ;
Cui, Tie Jun ;
Yang, Xin Mi ;
Cheng, Qiang ;
Liu, Ruopeng ;
Smith, David R. .
APPLIED PHYSICS LETTERS, 2008, 93 (19)
[9]   Ground-plane quasicloaking for free space [J].
Kallos, Efthymios ;
Argyropoulos, Christos ;
Hao, Yang .
PHYSICAL REVIEW A, 2009, 79 (06)
[10]   Engineering resonances in infrared metamaterials [J].
Kante, Boubacar ;
de Lustrac, Andre ;
Lourtioz, Jean-Michel ;
Gadot, Frederique .
OPTICS EXPRESS, 2008, 16 (10) :6774-6784