An ultra-thin isotropic metamaterial thermal radiator

被引：6
|
作者：
Zhou, Y. [1 ,2 ]
Feng, T. [1 ]
Liang, Z. [1 ]
Li, J. [1 ,3 ]
Liu, D. [2 ]
机构：
[1] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon Tong, Hong Kong, Peoples R China
[2] Beijing Normal Univ, Appl Opt Beijing Area Major Lab, Dept Phys, Beijing 100875, Peoples R China
[3] City Univ Hong Kong, State Key Lab Millimeter Waves, Kowloon, Hong Kong, Peoples R China
来源：
EPL | 2011年 / 96卷 / 02期
基金：
中国国家自然科学基金;
关键词：
DIMENSIONAL PHOTONIC CRYSTALS; NEGATIVE-INDEX; ABSORBER; EMISSION;
D O I：
10.1209/0295-5075/96/24005
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We design an ultra-thin infrared metamaterial thermal radiator which has nearly isotropic emission pattern for a wide range of angles. Our design is achieved by overlapping both the electric and magnetic resonances in the spectral domain and is insensitive to both TE and TM polarizations. The thermal emission of the metamaterial is nearly isotropic in which the deviation in the angular emissivity is within 10% up to an angle of 75 degrees at the resonating wavelength of 2.86 mu m. Moreover, our metamaterial can be easily scaled to have different resonating wavelengths for efficient radiative cooling or thermal emission at different temperatures. Copyright (C) EPLA, 2011
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页数：5
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