Integrating non-planar metamaterials with magnetic absorbing materials to yield ultra-broadband microwave hybrid absorbers

Wei Li, Purdue University, Birck Nanotechnology Center, Wuhan University of Technology
Tianlong Wu, Wuhan University of Technology
Wei Wang, Wuhan University of Technology
Jianguo Guan, Wuhan University of Technology
Pengcheng Zhai, Wuhan University of Technology

Date of this Version

1-13-2014

Comments

This is the Publisher PDF of Li, W; Wu, T; Wang, W; Guan, J; and Zhai, P. "Integrating non-planar metamaterials with magnetic absorbing materials to yield ultra-broadband microwave hybrid absorbers." Applied Physics Letters, 104, 022903 (2014). Copyright AIP, it is available at http://dx.doi.org/10.1063/1.4862262.

Abstract

Broadening the bandwidth of electromagnetic wave absorbers has greatly challenged material scientists. Here, we propose a two-layer hybrid absorber consisting of a non-planar metamaterial (MM) and a magnetic microwave absorbing material (MAM). The non-planar MM using magnetic MAMs instead of dielectric substrates shows good low frequency absorption and low reflection across a broad spectrum. Benefiting from this and the high frequency strong absorption of the MAM layer, the lightweight hybrid absorber exhibits 90% absorptivity over the whole 2-18 GHz range. Our result reveals a promising and flexible method to greatly extend or control the absorption bandwidth of absorbers. (C) 2014 AIP Publishing LLC.

Discipline(s)

Nanoscience and Nanotechnology

 

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