Tunable dual-band ultrasensitive graphene metamaterial terahertz sensor

Tunable dual-band ultrasensitive graphene metamaterial terahertz sensor | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Tunable dual-band ultrasensitive graphene metamaterial terahertz sensor Kejing Cai, Sihan Nie, Pengfei Sun, Xin Li, Yaxin Zhou, Lijing Su, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4791980/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract A highly sensitive terahertz metasurface refractive index sensor is proposed utilizing a graphene metamaterial with adjustable dual-band characteristics. The sensor comprises a SiO 2 substrate and a graphene metasurface. Through extensive simulations and analysis using finite difference time domain (FDTD) software, the absorption characteristics and sensing performance align with the predictions made by coupled mode theory (CMT). The simulations indicate two absorption peaks at 4.65 THz and 5.53 THz, achieving absorption rates reaching up to 99% and 54%, respectively. Furthermore, the sensitivities are 1.67 THz/RIU and 1.14 THz/RIU at resonance peaks, respectively. Stability and reliability analyses of our design include investigations into the effects of structural parameters and Fermi level on the absorption spectrum. This research significantly expands the potential applications of devices in the terahertz range. Graphene Terahertz Metasurface Sensor Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4791980","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":341355721,"identity":"ca51a0ca-4346-4f5c-90d6-77934becb5b4","order_by":0,"name":"Kejing Cai","email":"","orcid":"","institution":"Heilongjiang University","correspondingAuthor":false,"prefix":"","firstName":"Kejing","middleName":"","lastName":"Cai","suffix":""},{"id":341355722,"identity":"0e7292f2-ee7d-427f-ba5f-3bced1d8e92a","order_by":1,"name":"Sihan Nie","email":"","orcid":"","institution":"Heilongjiang University","correspondingAuthor":false,"prefix":"","firstName":"Sihan","middleName":"","lastName":"Nie","suffix":""},{"id":341355723,"identity":"266099db-1e10-4c4d-89e9-8e6def09f886","order_by":2,"name":"Pengfei Sun","email":"","orcid":"","institution":"Heilongjiang University","correspondingAuthor":false,"prefix":"","firstName":"Pengfei","middleName":"","lastName":"Sun","suffix":""},{"id":341355724,"identity":"bc98324b-2032-4dda-899c-8f00c5e13dc7","order_by":3,"name":"Xin Li","email":"","orcid":"","institution":"Heilongjiang University","correspondingAuthor":false,"prefix":"","firstName":"Xin","middleName":"","lastName":"Li","suffix":""},{"id":341355725,"identity":"931986d8-77f4-46d9-9911-c6d8c31e0b34","order_by":4,"name":"Yaxin Zhou","email":"","orcid":"","institution":"Heilongjiang University","correspondingAuthor":false,"prefix":"","firstName":"Yaxin","middleName":"","lastName":"Zhou","suffix":""},{"id":341355726,"identity":"e4515b7c-5225-467c-8542-dc5fdd8f343c","order_by":5,"name":"Lijing Su","email":"","orcid":"","institution":"Heilongjiang University","correspondingAuthor":false,"prefix":"","firstName":"Lijing","middleName":"","lastName":"Su","suffix":""},{"id":341355727,"identity":"414d5ff4-4aaf-47d9-96bb-994d6139b365","order_by":6,"name":"Yang Gao","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAvElEQVRIiWNgGAWjYLACxgYJBn5m5sMPSNIiIdnOlmZAihYGCYPzPAoSRKmWdz98TIJxh0Wd8WEeBgOGGptogloMz6SlSTCekZAwO8x74AHDsbTcBoJaGnLMJBjbQFr4EgwYGw4ToaX/DUSLcTOPgQRRWuQloLYYMBOrxUDiWbIFUIvkjMPAQE4gxi/y/ckHbzC21fHz9x8+/OBDjQ0RthxgYJH+A+MlEFIOtqWBgfkDMQpHwSgYBaNgBAMAJw837ir2fAUAAAAASUVORK5CYII=","orcid":"","institution":"Heilongjiang University","correspondingAuthor":true,"prefix":"","firstName":"Yang","middleName":"","lastName":"Gao","suffix":""}],"badges":[],"createdAt":"2024-07-24 03:14:14","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4791980/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4791980/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":63462940,"identity":"d65f2dd9-74ee-4b71-85e5-fd30694d66f5","added_by":"auto","created_at":"2024-08-28 11:48:20","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":974113,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4791980/v1_covered_55c55829-2295-435e-b85e-07e49167ab0b.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Tunable dual-band ultrasensitive graphene metamaterial terahertz sensor","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"Graphene, Terahertz, Metasurface, Sensor","lastPublishedDoi":"10.21203/rs.3.rs-4791980/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4791980/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eA highly sensitive terahertz metasurface refractive index sensor is proposed utilizing a graphene metamaterial with adjustable dual-band characteristics. 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