Open AccessTransparent broadband metamaterial absorber enhanced by water-substrate incorporation
Author(s) -
Yang Shen,
Jieqiu Zhang,
Yongqiang Pang,
Jiafu Wang,
Hua Ma,
Shaobo Qu
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.015665
Subject(s) - materials science , substrate (aquarium) , optics , optoelectronics , transmittance , metamaterial , indium tin oxide , microwave , broadband , layer (electronics) , absorption (acoustics) , distilled water , composite material , telecommunications , computer science , oceanography , physics , geology , chemistry , chromatography
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.