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A Broadband Compatible Multispectral Metamaterial Absorber for Visible, Near‐Infrared, and Microwave Bands
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2018-03-05 , DOI: 10.1002/adom.201701238 Meiling Li 1 , Badar Muneer 2 , Zixuan Yi 1 , Qi Zhu 1
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2018-03-05 , DOI: 10.1002/adom.201701238 Meiling Li 1 , Badar Muneer 2 , Zixuan Yi 1 , Qi Zhu 1
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A design of a compatible multispectral metamaterial absorber with broadband and strong absorption in the microwave, visible‐light, and near‐infrared bands is presented based on conductive carbon black (CCB)‐filled polyethylene (PE) composite films. The CCB‐filled PE composite films are employed to not only attenuate the light energy for realizing visible and near‐infrared absorbers, but also provide a conductive film to construct resistive metamaterial surfaces for realizing a microwave absorber. Considering the two natural properties of the composite films, light attenuation property and electric property, a multilayered structure based on resistive metamaterial surfaces is designed to realize a broadband compatible absorber. These resistive metamaterial surface layers are realized by the prepared composite films. The effect of different resistances of resistive metamaterial surfaces, polarization, and incident angles on the microwave absorbing performance is also analyzed in detail. Finally, a compatible multispectral absorber with a total thickness of 17 mm (0.133λmax) is fabricated and measured. Simulated and measured results both show that the presented absorber can achieve an absorption of 96.8% over a frequency range from 2.35 to 18 GHz. On the other hand, a high absorption of about 95% is obtained in visible‐light and near‐infrared bands as well.
中文翻译：
适用于可见光，近红外和微波波段的宽带兼容多光谱超材料吸收体
基于导电炭黑（CCB）填充的聚乙烯（PE）复合薄膜，提出了一种兼容的多光谱超材料吸收体的设计，该吸收体具有宽带并在微波，可见光和近红外波段具有强吸收性。使用CCB填充的PE复合膜不仅可以衰减光能以实现可见光和近红外吸收体，而且还可以提供导电膜来构建电阻超材料表面，从而实现微波吸收体。考虑到复合膜的两个自然特性，即光衰减特性和电特性，设计了基于电阻性超材料表面的多层结构，以实现宽带兼容的吸收体。这些电阻超材料表面层通过制备的复合膜实现。还详细分析了电阻性超材料表面的不同电阻，极化和入射角对微波吸收性能的影响。最后，使用兼容的多光谱吸收器，总厚度为17 mm（0.133λmax）被制造和测量。仿真和测量结果均表明，所提出的吸收器在2.35至18 GHz的频率范围内可实现96.8％的吸收。另一方面，在可见光和近红外波段也能获得约95％的高吸收率。
更新日期：2018-03-05
中文翻译：
适用于可见光，近红外和微波波段的宽带兼容多光谱超材料吸收体
基于导电炭黑（CCB）填充的聚乙烯（PE）复合薄膜，提出了一种兼容的多光谱超材料吸收体的设计，该吸收体具有宽带并在微波，可见光和近红外波段具有强吸收性。使用CCB填充的PE复合膜不仅可以衰减光能以实现可见光和近红外吸收体，而且还可以提供导电膜来构建电阻超材料表面，从而实现微波吸收体。考虑到复合膜的两个自然特性，即光衰减特性和电特性，设计了基于电阻性超材料表面的多层结构，以实现宽带兼容的吸收体。这些电阻超材料表面层通过制备的复合膜实现。还详细分析了电阻性超材料表面的不同电阻，极化和入射角对微波吸收性能的影响。最后，使用兼容的多光谱吸收器，总厚度为17 mm（0.133λmax）被制造和测量。仿真和测量结果均表明，所提出的吸收器在2.35至18 GHz的频率范围内可实现96.8％的吸收。另一方面，在可见光和近红外波段也能获得约95％的高吸收率。
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