Metamaterial terahertz absorbing device based on a hybrid structure of Dirac semimetal and graphene

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2025-03-20 DOI:10.1016/j.diamond.2025.112230

Wanhai Liu , Chaojun Tang , Ruyuan Zheng , Yougen Yi

{"title":"Metamaterial terahertz absorbing device based on a hybrid structure of Dirac semimetal and graphene","authors":"Wanhai Liu , Chaojun Tang , Ruyuan Zheng , Yougen Yi","doi":"10.1016/j.diamond.2025.112230","DOIUrl":null,"url":null,"abstract":"<div><div>This paper proposes a highly absorptive absorber based on BDS, which achieves tri-band perfect absorption through enhanced absorption utilizing graphene. This device introduces a novel architecture that utilizes BDS material as a foundation, through graphene layers further enhancing absorption, offering fresh research avenues within this field. The device exhibits perfect absorption at frequencies of f = 1.64 THz, f = 5.1 THz, and f = 9.7 THz, virtually covering the entire terahertz band. The accuracy of the device structure was verified through structural combination. As the dielectric constants of these materials vary with chemical doping or gate voltage, simulation results indicate that the absorbance bandwidth can be independently or jointly controlled by altering the Fermi energy of graphene or Dirac semimetal patterns. Through analysis of the electric field maps and examination of both the BDS layer and graphene layer, the high absorption of the absorber originates from localized surface plasmon resonances and their coupling between the BDS layer and graphene layer. Moreover, by adjusting the structural parameters and background refractive index, this device exhibits excellent performance in both manufacturing tolerance and anti-interference capability, further broadening its application range. In summary, this device has potential applications in fields such as detection, sensing, and optoelectronic devices.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112230"},"PeriodicalIF":4.3000,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Diamond and Related Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925963525002870","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}

引用次数: 0

Abstract

This paper proposes a highly absorptive absorber based on BDS, which achieves tri-band perfect absorption through enhanced absorption utilizing graphene. This device introduces a novel architecture that utilizes BDS material as a foundation, through graphene layers further enhancing absorption, offering fresh research avenues within this field. The device exhibits perfect absorption at frequencies of f = 1.64 THz, f = 5.1 THz, and f = 9.7 THz, virtually covering the entire terahertz band. The accuracy of the device structure was verified through structural combination. As the dielectric constants of these materials vary with chemical doping or gate voltage, simulation results indicate that the absorbance bandwidth can be independently or jointly controlled by altering the Fermi energy of graphene or Dirac semimetal patterns. Through analysis of the electric field maps and examination of both the BDS layer and graphene layer, the high absorption of the absorber originates from localized surface plasmon resonances and their coupling between the BDS layer and graphene layer. Moreover, by adjusting the structural parameters and background refractive index, this device exhibits excellent performance in both manufacturing tolerance and anti-interference capability, further broadening its application range. In summary, this device has potential applications in fields such as detection, sensing, and optoelectronic devices.

Abstract Image

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

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.