Infrared perfect absorber based on nanowire metamaterial cavities.

An infrared perfect absorber based on a gold nanowire metamaterial cavities array on a gold ground plane is designed. The metamaterial made of gold nanowires embedded in an alumina host exhibits an effective permittivity with strong anisotropy, which supports cavity resonant modes of both electric dipole and magnetic dipole. The impedance of the cavity modes matches the incident plane wave in free space, leading to nearly perfect light absorption. The incident optical energy is efficiently converted into heat so that the local temperature of the absorber will increase. Results show that the designed absorber is polarization-insensitive and nearly omnidirectional for the incident angle.

[1]  G. Shvets,et al.  Wide-angle infrared absorber based on a negative-index plasmonic metamaterial , 2008, 0807.1312.

[2]  M. Hentschel,et al.  Infrared perfect absorber and its application as plasmonic sensor. , 2010, Nano letters.

[3]  Gennady Shvets,et al.  Large-area, wide-angle, spectrally selective plasmonic absorber , 2011, 1104.3129.

[4]  宁北芳,et al.  疟原虫var基因转换速率变化导致抗原变异[英]／Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A , 2005 .

[5]  N. Fang,et al.  Ultrabroadband light absorption by a sawtooth anisotropic metamaterial slab. , 2011, Nano letters.

[6]  Ari Sihvola,et al.  Electromagnetic mixing formulas and applications , 1999 .

[7]  Willie J Padilla,et al.  Perfect metamaterial absorber. , 2008, Physical review letters.

[8]  Willie J Padilla,et al.  Taming the blackbody with infrared metamaterials as selective thermal emitters. , 2011, Physical review letters.

[9]  David R. Smith,et al.  Controlling Electromagnetic Fields , 2006, Science.

[10]  Viktor A. Podolskiy,et al.  Nonlocal effects in effective medium response of nanolayered metamaterials , 2007, 2007 Quantum Electronics and Laser Science Conference.

[11]  R. Shelby,et al.  Experimental Verification of a Negative Index of Refraction , 2001, Science.

[12]  Highly confined hybrid spoof surface plasmons in ultra-thin metal/dielectric heterostructures , 2010, CLEO: 2011 - Laser Science to Photonic Applications.

[13]  Willie J Padilla,et al.  A metamaterial absorber for the terahertz regime: design, fabrication and characterization. , 2008, Optics express.

[14]  R. Fante.  Quality factor of general ideal antennas , 1969 .

[15]  Jie Yao,et al.  Experimental realization of three-dimensional indefinite cavities at the nanoscale with anomalous scaling laws , 2012, Nature Photonics.

[16]  Koray Aydin,et al.  Broadband polarization-independent resonant light absorption using ultrathin plasmonic super absorbers. , 2011, Nature communications.

[17]  Alessandro Salandrino,et al.  Epsilon-near-zero metamaterials and electromagnetic sources: Tailoring the radiation phase pattern , 2007 .

[18]  Jie Yao,et al.  Three-dimensional nanometer-scale optical cavities of indefinite medium , 2011, Proceedings of the National Academy of Sciences.