Design and analysis of metamaterial-based ultra-broadband micro-scaled absorber with vanadium dioxide (VO2) and silicon dioxide (SiO2) for multiple terahertz applications

IF 2.5 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2025-03-17 DOI:10.1016/j.photonics.2025.101381

Mahesh Valathuru , Pokkunuri Pardhasaradhi , Nagandla Prasad , Boddapati Taraka Phani Madhav , Sudipta Das , Abeer D. Algarni , Mohammed El Ghzaoui

{"title":"Design and analysis of metamaterial-based ultra-broadband micro-scaled absorber with vanadium dioxide (VO2) and silicon dioxide (SiO2) for multiple terahertz applications","authors":"Mahesh Valathuru , Pokkunuri Pardhasaradhi , Nagandla Prasad , Boddapati Taraka Phani Madhav , Sudipta Das , Abeer D. Algarni , Mohammed El Ghzaoui","doi":"10.1016/j.photonics.2025.101381","DOIUrl":null,"url":null,"abstract":"<div><div>This research proposes an ultra-broadband terahertz absorber (UBTA) employing a metamaterial (MTM) structure based on vanadium dioxide (VO<sub>2</sub>). The top layer of the suggested MTM-UBTA model is made up of VO<sub>2</sub> that is 0.2 µm thick, the bottom layer is made up of 3 µm thick gold material, and the middle layer is made up of silicon dioxide (SiO<sub>2</sub>) dielectric material of 7 µm thickness. The simulation results indicate an absorption bandwidth of 4.1 THz, from 2.8 to 6.9 THz, obtained under normal incidence. The suggested absorber maintains absorption above 92 % over a broad operating wavelength of 43.44 μm to 107.06 μm. The main goal of this study is to look into THz metamaterial absorbers based on VO<sub>2</sub> in great detail, including every facet of their design validation and hys RevL through an ECM (Equivalent Circuit Model) approach. Furthermore, the impact of incident and polarization angle on absorbance for TE and TM modes is discussed and polarization insensitivity is verified. The prescribed MTM-ultra-broadband terahertz absorber is suitable for intelligent absorption, terahertz tuning, modulation, cloaking, optic-electro switching, biological sensing, and stealth technology.</div></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"64 ","pages":"Article 101381"},"PeriodicalIF":2.5000,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Photonics and Nanostructures-Fundamentals and Applications","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1569441025000318","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

This research proposes an ultra-broadband terahertz absorber (UBTA) employing a metamaterial (MTM) structure based on vanadium dioxide (VO₂). The top layer of the suggested MTM-UBTA model is made up of VO₂ that is 0.2 µm thick, the bottom layer is made up of 3 µm thick gold material, and the middle layer is made up of silicon dioxide (SiO₂) dielectric material of 7 µm thickness. The simulation results indicate an absorption bandwidth of 4.1 THz, from 2.8 to 6.9 THz, obtained under normal incidence. The suggested absorber maintains absorption above 92 % over a broad operating wavelength of 43.44 μm to 107.06 μm. The main goal of this study is to look into THz metamaterial absorbers based on VO₂ in great detail, including every facet of their design validation and hys RevL through an ECM (Equivalent Circuit Model) approach. Furthermore, the impact of incident and polarization angle on absorbance for TE and TM modes is discussed and polarization insensitivity is verified. The prescribed MTM-ultra-broadband terahertz absorber is suitable for intelligent absorption, terahertz tuning, modulation, cloaking, optic-electro switching, biological sensing, and stealth technology.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Photonics and Nanostructures-Fundamentals and Applications 工程技术-材料科学：综合

CiteScore

5.00

自引率

3.70%

发文量

审稿时长

62 days

期刊介绍： This journal establishes a dedicated channel for physicists, material scientists, chemists, engineers and computer scientists who are interested in photonics and nanostructures, and especially in research related to photonic crystals, photonic band gaps and metamaterials. The Journal sheds light on the latest developments in this growing field of science that will see the emergence of faster telecommunications and ultimately computers that use light instead of electrons to connect components.