A Planar Broadband Metamaterial Absorber with the Polarization Insensitive and Omnidirectional Absorption in the Min-infrared Regime
In this paper, we present the design, fabrication and characterization of a polarization insensitive and omnidirectional broadband planar metamaterial perfect absorber (MPA) in the min-infrared regime. Multi-sized resonators are employed to excite the broadband absorption, and the absorption bandwidth is efficiently broadened compared with the single-sized absorber. Geometric effects on the resonance wavelengths are studied in detail by using the equivalent circuit model. Experiment result shows that greater than 70% absorption is obtained within a waveband of 0.67 μm, which is in reasonable agreement with the simulation. The electromagnetic response of the MPA is theoretically investigated to reveal the intrinsic absorption mechanism. The broadband planar MPA is polarization insensitive and the absorption retains quite high even at large incident angles. The proposed structure holds promise for many applications, such as sensitive detecting, energy harvesting, and thermal modulating.
Nan Zhang Linbo Zhang Guorui Zhang Peiheng Zhou Xiaolong Weng Jianliang Xie Longjiang Deng
National Engineering Research Center of Electromagnetic Radiation Control Materials State Key Laboratory of Electronic Thin Film and Integrated Devices University of Electronic Science and Technology of China, China
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
928-932
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）