Journal
CRYSTALS
Volume 11, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/cryst11121583
Keywords
metamaterial absorber; optically transparent; flexible; silver nanowire; ultrathin
Funding
- Equipment Advance Research Field Fund Project [80909010205]
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Researchers have developed an optically transparent and flexible metamaterial absorber, which can efficiently absorb electromagnetic waves in the frequency range of 6 GHz to 18 GHz and exhibit wide-angle properties. Additionally, it has a high transmittance rate in the visible light range.
The design of an optically transparent and flexible metamaterial absorber was presented and fabricated. For this purpose, we use two different patterned silver nanowire films separated by the space layer, forming a transparent sandwiched structure with an ultrathin thickness. By analyzing the equivalent circuit model and distribution of electric field and current, the absorption physical mechanism has been theoretically investigated. The results show that the structure can achieve above 0.8 absorptions from 6 GHz to 18 GHz, and at the same time, this absorber also can obtain wide-angle property. The optical transmittance of the fabricated absorber exceeds 82% in the visible band. The results demonstrate that transparency and flexibility are the additional benefits that make the proposed absorber suitable for various potential applications.
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