Journal
OPTICS EXPRESS
Volume 26, Issue 13, Pages 16466-16476Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.016466
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Funding
- National Natural Science Foundations of China (NSFC) [61701268, 61775195, 61631012]
- Natural Science Foundation of Ningbo City [2016A610066]
- Natural Science Foundation of Zhejiang Province [LQ17F010003, LZ17A040001]
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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-reflectionlcss and frequency-selectivetransmission properties will enable the promising application of communication-compatible multispectral stealth technology. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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