Applied Physics A

, Volume 102, Issue 1, pp 99–103 | Cite as

Perfect metamaterial absorber based on a split-ring-cross resonator

Article

Abstract

In this paper, we present a polarization-insensitive metamaterial (MM) absorber which is composed of the dielectric substrate sandwiched with split-ring-cross resonator (SRCR) and continuous metal film. The MM absorber is not limited by the quarter-wavelength thickness and can achieve near-unity absorbance by properly assembling the sandwiched structure. Microwave experiments demonstrate the maximum absorptivity to be about 99% around 10.91 GHz for incident wave with different polarizations. The surface currents distributions of the resonance structure are discussed to look into the resonance mechanism. Importantly, our absorber is only 0.4 mm thick, and numerical simulations confirm that the MM absorber could achieve very high absorptivity at wide angles of incidence for both transverse electric (TE) wave and transverse magnetic (TM) wave. The sandwiched structure is also suitable for designing of a THz and even higher frequency MM absorber, and simulations demonstrate the absorption of 99% at 1.105 THz.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Yongzhi Cheng
    • 1
  • Helin Yang
    • 1
  • Zhengze Cheng
    • 2
  • Nan Wu
    • 3
  1. 1.College of Physical Science and TechnologyHuazhong Normal UniversityWuhanP.R. China
  2. 2.The School of Electronic and Information EngineeringXianNing UniversityXianningP.R. China
  3. 3.National Key Laboratory of EMCChina Ship Development and Design CenterWuhanP.R. China

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