Broadband asymmetric absorption-transmission and double-band rasorber of electromagnetic waves based on superconductor ceramics metastructures-photonic crystals

IF 5.1 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY Engineering Science and Technology-An International Journal-Jestech Pub Date : 2024-08-17 DOI:10.1016/j.jestch.2024.101810

Lei Lei, Bao-Fei Wan, Si-Yuan Liao, Hai-Feng Zhang

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Abstract

In this paper, a kind of superconductor ceramics metastructure-photonic crystals (SCMPC) is proposed to investigate the absorption and transmission properties of electromagnetic waves (EW) by combining a metastructure with multiple degrees of freedom regulation and strong energy localization characteristics of photonic crystals. Firstly, for the periodically aligned SCMPC, EW mainly realizes absorption in forward propagation and transmission in backward case. The relative bandwidth (RB) for both forward absorptivity and backward transmittance greater than 0.9 is 2.7 %, and the operating bandwidth (OB) is 696 ∼ 715 terahertz (THz), which is an asymmetric absorption-transmission (AAT) characteristics. Importantly, the periodically aligned SCMPC can realize the double-band rasorber phenomenon, and the forward EW exhibits an absorption-transmission-absorption phenomenon with OBs of 644.2 ∼ 671.1 THz, 700.9 ∼ 742.1 THz, and 766.8 ∼ 784.2 THz. RBs with absorption and transmissivity greater than 0.8 are 4.1 %, 5.7 %, and 2.2 %, respectively, and the backward EW one is mainly transmitted. To optimize AAT, a quasi-periodic Octonacci sequence-aligned SCMPC is introduced. The results show that the maximum OB of forward absorption and backward transmission is 428.3 ∼ 670.5 THz and RB is 44.1 %, achieving favorable broadband AAT. In addition, the effects of temperatures, dielectric thicknesses, and stacking numbers on AAT are also investigated in detail. In conclusion, AAT has promising applications in unidirectional optical transmission, photodiodes, optical isolators, etc.

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基于超导体陶瓷元结构-光子晶体的宽带非对称吸收-传输和双波段电磁波吸收器

本文提出了一种超导陶瓷元结构-光子晶体（SCMPC），通过结合具有多自由度调节的元结构和光子晶体的强能量局域特性，研究电磁波（EW）的吸收和传输特性。首先，对于周期性排列的 SCMPC，电磁波在前向传播时主要实现吸收，在后向传播时主要实现传输。前向吸收率和后向透过率均大于 0.9 时的相对带宽（RB）为 2.7%，工作带宽（OB）为 696 ∼ 715 太赫兹（THz），具有非对称吸收-传输（AAT）特性。重要的是，周期性排列的 SCMPC 可实现双波段拉索现象，正向 EW 表现出吸收-透射-吸收现象，OB 分别为 644.2 ∼ 671.1 太赫兹、700.9 ∼ 742.1 太赫兹和 766.8 ∼ 784.2 太赫兹。吸收率和透射率大于 0.8 的 RB 分别为 4.1%、5.7% 和 2.2%，后向 EW 主要是透射的。为了优化 AAT，引入了准周期的 Octonacci 序列对齐 SCMPC。结果表明，前向吸收和后向传输的最大 OB 为 428.3 ∼ 670.5 THz，RB 为 44.1%，实现了良好的宽带 AAT。此外，还详细研究了温度、介质厚度和堆叠数对 AAT 的影响。总之，AAT 在单向光传输、光电二极管、光隔离器等领域具有广阔的应用前景。

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来源期刊

Engineering Science and Technology-An International Journal-Jestech Materials Science-Electronic, Optical and Magnetic Materials

CiteScore

11.20

自引率

3.50%

发文量

153

审稿时长

22 days

期刊介绍： Engineering Science and Technology, an International Journal (JESTECH) (formerly Technology), a peer-reviewed quarterly engineering journal, publishes both theoretical and experimental high quality papers of permanent interest, not previously published in journals, in the field of engineering and applied science which aims to promote the theory and practice of technology and engineering. In addition to peer-reviewed original research papers, the Editorial Board welcomes original research reports, state-of-the-art reviews and communications in the broadly defined field of engineering science and technology. The scope of JESTECH includes a wide spectrum of subjects including: -Electrical/Electronics and Computer Engineering (Biomedical Engineering and Instrumentation; Coding, Cryptography, and Information Protection; Communications, Networks, Mobile Computing and Distributed Systems; Compilers and Operating Systems; Computer Architecture, Parallel Processing, and Dependability; Computer Vision and Robotics; Control Theory; Electromagnetic Waves, Microwave Techniques and Antennas; Embedded Systems; Integrated Circuits, VLSI Design, Testing, and CAD; Microelectromechanical Systems; Microelectronics, and Electronic Devices and Circuits; Power, Energy and Energy Conversion Systems; Signal, Image, and Speech Processing) -Mechanical and Civil Engineering (Automotive Technologies; Biomechanics; Construction Materials; Design and Manufacturing; Dynamics and Control; Energy Generation, Utilization, Conversion, and Storage; Fluid Mechanics and Hydraulics; Heat and Mass Transfer; Micro-Nano Sciences; Renewable and Sustainable Energy Technologies; Robotics and Mechatronics; Solid Mechanics and Structure; Thermal Sciences) -Metallurgical and Materials Engineering (Advanced Materials Science; Biomaterials; Ceramic and Inorgnanic Materials; Electronic-Magnetic Materials; Energy and Environment; Materials Characterizastion; Metallurgy; Polymers and Nanocomposites)