Journal
OPTICS EXPRESS
Volume 26, Issue 12, Pages 15665-15674Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.015665
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Funding
- National Natural Science Foundation of China [61471388, 61671467]
- China Postdoctoral Science Foundation [2015M572561]
- Foundation for the Author of National Excellent Doctoral Dissertation of the People's Republic of China [201242]
- Shanxi Province Scientific and Technology Innovation Team Foundation of China [2014KCT-05]
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In this paper, a transparent metamaterial absorber (MA) loaded with water substrate is presented, which can simultaneously achieve enhanced broadband microwave absorption and tunable infrared radiation. As a proof, the indium tin oxide (ITO) films are first introduced here as a frequency selective surface (FSS) on the top layer and reflective backplane on the ground layer. Next the distilled water combined with the polymethyl methacrylate (PMMA) substrate is employed as a hybrid substrate in the middle. Simulation and experimental measurements show that the transparent water-substrate MA can achieve broadband microwave absorption with efficiency over 90% in the frequency band of 6.4-23.7GHz, and the proposed hybrid substrate has almost no influence on its original transmittance. Moreover, owing to the available water circulation system, the infrared radiation of the proposed MA is also demonstrated to be controlled by the temperature of the injected water. Based on its multifunction and high performance, it is expected that the proposed design may find potential applications, such as glass window of stealth equipment, electromagnetic compatible buildings/facilities, etc. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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