Reconfigurable Terahertz Metamaterials

被引:456
作者
Tao, Hu [1 ]
Strikwerda, A. C. [2 ]
Fan, K. [1 ]
Padilla, W. J. [3 ]
Zhang, X. [1 ]
Averitt, R. D. [2 ]
机构
[1] Boston Univ, Dept Mech Engn, Boston, MA 02215 USA
[2] Boston Univ, Dept Phys, Boston, MA 02215 USA
[3] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA
关键词
MICROMIRROR; FREQUENCIES;
D O I
10.1103/PhysRevLett.103.147401
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We demonstrate reconfigurable anisotropic metamaterials at terahertz frequencies where artificial "atoms" reorient within unit cells in response to an external stimulus. This is accomplished by fabricating planar arrays of split ring resonators on bimaterial cantilevers designed to bend out of plane in response to a thermal stimulus. We observe a marked tunability of the electric and magnetic response as the split ring resonators reorient within their unit cells. Our results demonstrate that adaptive metamaterials offer significant potential to realize novel electromagnetic functionality ranging from thermal detection to reconfigurable cloaks or absorbers.
引用
收藏
页数:4
相关论文
共 22 条
[1]   Plasmonic and metamaterial cloaking:: physical mechanisms and potentials [J].
Alu, Andrea ;
Engheta, Nader .
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS, 2008, 10 (09)
[2]   Experimental demonstration of frequency-agile terahertz metamaterials [J].
Chen, Hou-Tong ;
O'Hara, John F. ;
Azad, Abul K. ;
Taylor, Antoinette J. ;
Averitt, Richard D. ;
Shrekenhamer, David B. ;
Padilla, Willie J. .
NATURE PHOTONICS, 2008, 2 (05) :295-298
[3]   Active terahertz metamaterial devices [J].
Chen, Hou-Tong ;
Padilla, Willie J. ;
Zide, Joshua M. O. ;
Gossard, Arthur C. ;
Taylor, Antoinette J. ;
Averitt, Richard D. .
NATURE, 2006, 444 (7119) :597-600
[4]   Sub-diffraction-limited optical imaging with a silver superlens [J].
Fang, N ;
Lee, H ;
Sun, C ;
Zhang, X .
SCIENCE, 2005, 308 (5721) :534-537
[5]  
GRISCHKOWSKY D, 2006, J OPT SOC AM B, V7, P1990
[6]   Perfect metamaterial absorber [J].
Landy, N. I. ;
Sajuyigbe, S. ;
Mock, J. J. ;
Smith, D. R. ;
Padilla, W. J. .
PHYSICAL REVIEW LETTERS, 2008, 100 (20)
[7]   Magnetic response of metamaterials at 100 terahertz [J].
Linden, S ;
Enkrich, C ;
Wegener, M ;
Zhou, JF ;
Koschny, T ;
Soukoulis, CM .
SCIENCE, 2004, 306 (5700) :1351-1353
[8]   Role of bianisotropy in negative permeability and left-handed metamaterials -: art. no. 144440 [J].
Marqués, R ;
Medina, F ;
Rafii-El-Idrissi, R .
PHYSICAL REVIEW B, 2002, 65 (14)
[9]   Electrically resonant terahertz metamaterials: Theoretical and experimental investigations [J].
Padilla, W. J. ;
Aronsson, M. T. ;
Highstrete, C. ;
Lee, Mark ;
Taylor, A. J. ;
Averitt, R. D. .
PHYSICAL REVIEW B, 2007, 75 (04)
[10]   Group theoretical description of artificial electromagnetic metamaterials [J].
Padilla, Willie J. .
OPTICS EXPRESS, 2007, 15 (04) :1639-1646