Optically transparent terahertz triple-band and dual-band metamaterial absorber

IF 0.7 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Circuit World Pub Date : 2021-01-26 DOI:10.1108/CW-05-2020-0083

A. Elakkiya, R. Sankararajan, B. S. Sreeja

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引用次数: 0

Abstract

Purpose The proposed metamaterial absorber (MMA) has the following advantages: first, the structure of the MMA consists of one planar metallic resonator, which presents a new design approach to obtain a multiband absorption response, rather than using multiple unit-cells in the one large unit cell or stacking different layers. Second, the simultaneous realization of triple-band and dual-band absorption (or bi-functional absorption) at five different frequencies can integrate the respective advantages of the triple functions of the triple-band MMA and double-band MMA, and therefore, the bi-functional MMA will find more application prospects than multiple-functional devices of triple-band and dual-band. Third, the authors simulated the three combinations of MMA here, which is indium tin oxide (ITO)-Polyimide-ITO, ITO-Teflon-ITO and ITO-polyethylene terephthalate (PET)-ITO for the same planar structure and achieve a high absorption rate. Finally, the proposed structure is polarization and angle independent in nature. Design/methodology/approach This absorption device consists of the top circular resonator, the middle insulating SiO2 medium layer and the bottom metallic copper ground plane placed on a substrate. The conductivity of the copper metal is s = 5.8 × 107 s/m. As the transmission of the MMA structure is zero, the substrate materials can be selected randomly. Totally four combinations of terahertz MMA are designed and simulated here which are ITO- SiO2 –ITO, ITO-Polyimide-ITO, ITO-Teflon-ITO and ITO- PET-ITO for the same planar structure. Findings Compared with previous MMAs, the proposed MMA has the following advantages: First, the structure of the MMA consists of one planar metallic resonator, which presents a new design approach to obtain a multiband absorption response, rather than using multiple unit-cells in the one large unit cell or stacking different layers. Second, the simultaneous realization of triple-band and dual-band absorption (or bi-functional absorption) at five different frequencies can integrate the respective advantages of the triple functions of the triple-band MMA and double-band MMA, and therefore, the bi-functional MMA will find more application prospects than multiple-functional devices of triple-band and dual-band. Third, the authors simulated the three combinations of MMA here, which is ITO-polyimide-ITO, ITO-Teflon-ITO and ITO- PET-ITO for the same planar structure and achieve a high absorption rate. Finally, the proposed structure is polarization and angle independent in nature. Originality/value First, the structure of the MMA consists of one planar metallic resonator, which presents a new design approach to obtain a multiband absorption response, rather than using multiple unit-cells in the one large unit cell or stacking different layers. Second, the simultaneous realization of triple-band and dual-band absorption (or bi-functional absorption) at five different frequencies can integrate the respective advantages of the triple functions of the triple-band MMA and double-band MMA, and therefore, the bi-functional MMA will find more application prospects than multiple-functional devices of triple-band and dual-band. Third, the authors simulated the three combinations of MMA here, which is ITO-polyimide-ITO, ITO-Teflon-ITO and ITO-PET-ITO for the same planar structure and achieve a high absorption rate. Finally, the proposed structure is polarization and angle independent in nature.

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光学透明的太赫兹三波段和双波段超材料吸收器

目的所提出的超材料吸收体（MMA）具有以下优点：首先，MMA的结构由一个平面金属谐振器组成，这为获得多频带吸收响应提供了一种新的设计方法，而不是在一个大的晶胞中使用多个晶胞或堆叠不同的层。其次，在五个不同频率同时实现三频带和双频带吸收（或双功能吸收），可以整合三频带MMA和双频带MMA的三功能各自的优势，因此，双功能MMA将比三频带、双频带的多功能器件更有应用前景。第三，作者在这里模拟了MMA的三种组合，即氧化铟锡（ITO）-聚酰亚胺ITO、ITO聚四氟乙烯ITO和ITO聚对苯二甲酸乙二醇酯（PET）-ITO，用于相同的平面结构，并实现了高吸收率。最后，所提出的结构本质上是偏振和角度无关的。设计/方法/方法该吸收装置由顶部圆形谐振器、中间绝缘SiO2介质层和放置在衬底上的底部金属铜接地层组成。铜金属的电导率为s=5.8 × 107秒/米。由于MMA结构的透射率为零，因此可以随机选择衬底材料。针对同一平面结构，设计并模拟了四种太赫兹MMA组合，即ITO-SiO2-ITO、ITO-聚酰亚胺ITO、伊藤-聚四氟乙烯ITO和伊藤-PET-ITO。发现与以前的MMA相比，所提出的MMA具有以下优点：首先，MMA的结构由一个平面金属谐振器组成，这为获得多频带吸收响应提供了一种新的设计方法，而不是在一个大的晶胞中使用多个晶胞或堆叠不同的层。其次，在五个不同频率同时实现三频带和双频带吸收（或双功能吸收），可以整合三频带MMA和双频带MMA的三功能各自的优势，因此，双功能MMA将比三频带、双频带的多功能器件更有应用前景。第三，作者在这里模拟了MMA的三种组合，即ITO聚酰亚胺ITO、ITO聚四氟乙烯ITO和ITO-PET-ITO，用于相同的平面结构，并实现了高吸收率。最后，所提出的结构本质上是偏振和角度无关的。独创性/价值首先，MMA的结构由一个平面金属谐振器组成，这提供了一种获得多频带吸收响应的新设计方法，而不是在一个大晶胞中使用多个晶胞或堆叠不同的层。其次，在五个不同频率同时实现三频带和双频带吸收（或双功能吸收），可以整合三频带MMA和双频带MMA的三功能各自的优势，因此，双功能MMA将比三频带、双频带的多功能器件更有应用前景。第三，作者在这里模拟了MMA的三种组合，即ITO聚酰亚胺ITO、ITO聚四氟乙烯ITO和ITO-PET-ITO，用于相同的平面结构，并实现了高吸收率。最后，所提出的结构本质上是偏振和角度无关的。

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来源期刊

Circuit World 工程技术-材料科学：综合

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Circuit World is a platform for state of the art, technical papers and editorials in the areas of electronics circuit, component, assembly, and product design, manufacture, test, and use, including quality, reliability and safety. The journal comprises the multidisciplinary study of the various theories, methodologies, technologies, processes and applications relating to todays and future electronics. Circuit World provides a comprehensive and authoritative information source for research, application and current awareness purposes. Circuit World covers a broad range of topics, including: • Circuit theory, design methodology, analysis and simulation • Digital, analog, microwave and optoelectronic integrated circuits • Semiconductors, passives, connectors and sensors • Electronic packaging of components, assemblies and products • PCB design technologies and processes (controlled impedance, high-speed PCBs, laminates and lamination, laser processes and drilling, moulded interconnect devices, multilayer boards, optical PCBs, single- and double-sided boards, soldering and solderable finishes) • Design for X (including manufacturability, quality, reliability, maintainability, sustainment, safety, reuse, disposal) • Internet of Things (IoT).