Terahertz wide-band band-stop plasmonic filter based on Dirac semimetal and stub resonators

IF 2.7 Q2 PHYSICS, CONDENSED MATTER
Zhuang Li, Yan Pan, Fang Chen, Wenxing Yang
{"title":"Terahertz wide-band band-stop plasmonic filter based on Dirac semimetal and stub resonators","authors":"Zhuang Li,&nbsp;Yan Pan,&nbsp;Fang Chen,&nbsp;Wenxing Yang","doi":"10.1016/j.micrna.2025.208156","DOIUrl":null,"url":null,"abstract":"<div><div>As a special three-dimensional material, bulk Dirac semimetal (BDS) has flexibility and tunability, allowing the bandwidth characteristics of band stop filters to be changed by altering the Fermi level and relaxation time. In this paper, a wideband band-stop filter based on BDS-insulator-BDS waveguide using BDS is proposed for the first time. The wideband plasmonic band-stop filter was numerically and theoretically studied using the FDTD method. In order to improve the performance of the proposed filter by widening the stopband frequency, we increased the number of stub resonators. In addition, by changing the geometric parameters of the stub resonator and the distance between the stubs, the filtering range and center frequency can be modified and shifted to a larger frequency. Its maximum bandwidth increases from 0.3934 THz to 0.5289 THz when more stub resonators are introduced. Therefore, the proposed plasmonic filter dynamically adjusts the filtering frequency and bandwidth by adjusting the Fermi level of BDS, providing a flexible and effective solution.</div></div>","PeriodicalId":100923,"journal":{"name":"Micro and Nanostructures","volume":"204 ","pages":"Article 208156"},"PeriodicalIF":2.7000,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Micro and Nanostructures","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2773012325000858","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
引用次数: 0

Abstract

As a special three-dimensional material, bulk Dirac semimetal (BDS) has flexibility and tunability, allowing the bandwidth characteristics of band stop filters to be changed by altering the Fermi level and relaxation time. In this paper, a wideband band-stop filter based on BDS-insulator-BDS waveguide using BDS is proposed for the first time. The wideband plasmonic band-stop filter was numerically and theoretically studied using the FDTD method. In order to improve the performance of the proposed filter by widening the stopband frequency, we increased the number of stub resonators. In addition, by changing the geometric parameters of the stub resonator and the distance between the stubs, the filtering range and center frequency can be modified and shifted to a larger frequency. Its maximum bandwidth increases from 0.3934 THz to 0.5289 THz when more stub resonators are introduced. Therefore, the proposed plasmonic filter dynamically adjusts the filtering frequency and bandwidth by adjusting the Fermi level of BDS, providing a flexible and effective solution.
求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
6.50
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信