Metamaterial Electromagnetic Superabsorber with Arbitrary Geometries

Jingjing Yang, Ming Huang, Chengfu Yang, Jinhui Peng and Rong Zong
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Jingjing Yang: School of Information Science and Engineering, Yunnan University, Kunming 650091, China
Ming Huang: School of Information Science and Engineering, Yunnan University, Kunming 650091, China
Chengfu Yang: School of Information Science and Engineering, Yunnan University, Kunming 650091, China
Jinhui Peng: Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
Rong Zong: School of Information Science and Engineering, Yunnan University, Kunming 650091, China

Energies, 2010, vol. 3, issue 7, 1-9

Abstract: The electromagnetic superabsorber that has larger absorption cross section than its real size may be a novel photothermal device with improved solar energy conversion rates. Based on a transformation optical approach, the material parameters for a two-dimensional (2D) metamaterial-assisted electromagnetic superabsorber with arbitrary geometries are derived and validated by numerical simulation. We find that for the given geometry size, the absorption cross section of the superabsorber using nonlinear transformation is larger than that using linear transformation. These transformations can also be specialized to the designing the N-sided regular polygonal superabsorber just by changing the contour equation. All theoretical and numerical results validate the material parameters for the 2D electromagnetic superabsorber we have developed.

Keywords: superabsorber; metamaterials; coordinate transformation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2010
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