Zhong Shuomin, Wu Lijie, Liu Taijun, Huang Jifu, Jiang Wei, Ma Yungui
Opt Express. 2018 Jun 25;26(13):16466-16476. doi: 10.1364/OE.26.016466.
We report a multifunctional metamaterial composite structure that not only provides the broadband radar and thermal infrared bi-stealth function but also possesses an in-band microwave transmission window and high optical transparency. It is composed of four metasurface layers made of indium tin oxide (ITO) films with different surface resistances, which are specifically designed to sequentially control the infrared emission, microwave absorption and transmission. The fabricated sample exhibits a low reflectivity less than 10% in 1.5-9 GHz and a transmission peak of 50% around 3.8 GHz up to the incident angle of 30 degrees. In the infrared atmosphere window, a low thermal emissivity of about 0.52 is achieved. Meanwhile, it keeps good optical transparency by the use of the ITO films. The optically transparent, low-infrared-emissivity, radar-reflectionless and frequency-selective-transmission properties will enable the promising application of communication-compatible multispectral stealth technology.
我们报道了一种多功能超材料复合结构，它不仅提供宽带雷达和热红外双隐身功能，还拥有带内微波传输窗口和高光学透明度。它由四个由具有不同表面电阻的氧化铟锡（ITO）薄膜制成的超表面层组成，这些超表面层经过专门设计，以依次控制红外发射、微波吸收和传输。所制备的样品在1.5 - 9 GHz频段内具有小于10%的低反射率，在3.8 GHz左右有高达50%的传输峰值，入射角可达30度。在红外大气窗口中，实现了约0.52的低热发射率。同时，通过使用ITO薄膜，它保持了良好的光学透明度。这种光学透明、低红外发射率、无雷达反射和频率选择性传输特性将使通信兼容的多光谱隐身技术有广阔的应用前景。
