期刊
APPLIED PHYSICS LETTERS
卷 104, 期 2, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4862262
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资金
- National Natural Science Foundation of China [11204225]
- Equipment Development pre-research shared Technology Fund Project [9140A10031212QT69120]
- Top Talents Lead Cultivation Project of Hubei Province
- China Postdoctoral Science Foundation [2012M521483, 2013T60751]
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.
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