Journal
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
Volume 9, Issue 1, Pages 8-14Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.photonics.2010.07.002
Keywords
Impedance-matched; Metamaterial absorber; Polarization-insensitive
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Funding
- National High Technology Research and Development Program of China [2008AA12Z102]
- Hubei provincial Department of Education [D20108202]
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The model of the polarization-insensitive metamaterial (MM) absorber composed of split cross-ring resonator (SCRR), cave-cross resonator (CCR) and dielectric substrate was proposed at microwave frequencies. Based on perfect impedance-matched ((z) over tilde(omega) = 1) to the free space, the single unit cell could achieve near-unity absorbance by properly assembling the sandwich structure. We have simulated and measured the reflectivity and transmission properties of a planar MM absorber with the thickness of 0.6 mm. The absorptivity of a single layer MM absorber achieve greater than 96% around 10.07 GHz in experiments and 98% in simulations for incident electromagnetic (EM) wave with different polarizations. (C) 2010 Elsevier B.V. All rights reserved.
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