Authors
Dexin Ye, Zhiyu Wang, Kuiwen Xu, Huan Li, Jiangtao Huangfu, Zheng Wang, Lixin Ran
Publication date
2013/10/29
Journal
Physical review letters
Volume
111
Issue
18
Pages
187402
Publisher
American Physical Society
Description
Narrow bandwidth is a fundamental issue plaguing practical applications of metamaterial absorbers. In this Letter, we show that by deliberately controlling the dispersion and dissipation of a metamaterial, an ultrawideband perfect metamaterial absorber with complex-valued constitutive parameters strictly satisfying the modified model of a perfectly matched layer, can be achieved. The nearly perfect power absorption, better than 99%, was experimentally observed in an unprecedented bandwidth of 39%, approaching the theoretical Rozanov limit. We expect a wide range of applications to emerge from this general concept.
Scholar articles
D Ye, Z Wang, K Xu, H Li, J Huangfu, Z Wang, L Ran - Physical review letters, 2013