Dual functional Device Featuring Absorption and Polarization Conversion Based on Temperature Controlled Metasurface for Terahertz Applications

Dual functional Device Featuring Absorption and Polarization Conversion Based on Temperature Controlled Metasurface for Terahertz Applications | 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 Article Dual functional Device Featuring Absorption and Polarization Conversion Based on Temperature Controlled Metasurface for Terahertz Applications SAEEDEH BARZEGAR-PARIZI This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6911250/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 12 You are reading this latest preprint version Abstract This study presents the development of a dual-functional terahertz device based on a metasurface layer combining metallic and vanadium dioxide (VO 2 ) elements. The proposed metasurface is controllable through the temperature-tuning properties of VO 2 and leads to the performance of absorption and polarization conversion with metal-insulator transition properties of VO 2 . The unit cell of the proposed structure consists of a metasurface layer including a metallic large square ring with four gaps filled by VO 2 , alongside a smaller VO 2 square ring deposited on dielectric layer above a reflective ground plane separated by an air spacer. VO 2 exhibits a reversible metal–insulator phase transition at 68°C, which is accompanied by a remarkable change in both electrical and optical properties. At room temperature (298 K), where the VO 2 is in the insulating state, the metasurface operates as a linear-to-linear cross polarization converter (LTLPC) over a frequency range of 0.66 to 1.7 THz, achieving an 88% fractional bandwidth (FBW). When heated above 351 K, VO2 transitions to its metallic state, and the metasurface functions as an absorber with over 80% absorptivity across a frequency range of 0.34 to 1.96 THz, corresponding to a fractional bandwidth of 140%. The proposed structure offers significant advantages including simplified geometry, ease of fabrication, and enhanced performance, particularly in terms of bandwidth. This design not only dominates the deficiency of existing terahertz technologies but also suggests new possibilities for applications in the switchable and reconfigurable devices in terahertz measurement and communication systems. Physical sciences/Engineering Physical sciences/Materials science Physical sciences/Nanoscience and technology Physical sciences/Optics and photonics Physical sciences/Physics Polarization Converter Absorber Phase Change Material Vanadium dioxide Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 02 Dec, 2025 Reviews received at journal 23 Nov, 2025 Reviewers agreed at journal 11 Nov, 2025 Reviews received at journal 08 Nov, 2025 Reviewers agreed at journal 08 Nov, 2025 Reviews received at journal 31 Jul, 2025 Reviewers agreed at journal 09 Jul, 2025 Reviewers agreed at journal 08 Jul, 2025 Reviewers invited by journal 08 Jul, 2025 Editor assigned by journal 24 Jun, 2025 Submission checks completed at journal 21 Jun, 2025 First submitted to journal 21 Jun, 2025 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. 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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-6911250","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":482423921,"identity":"62707c7e-caf8-44d6-8e85-d44682c2f089","order_by":0,"name":"SAEEDEH BARZEGAR-PARIZI","email":"data:image/png;base64,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","orcid":"","institution":"Sirjan University of Technology","correspondingAuthor":true,"prefix":"","firstName":"SAEEDEH","middleName":"","lastName":"BARZEGAR-PARIZI","suffix":""}],"badges":[],"createdAt":"2025-06-17 07:08:23","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6911250/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6911250/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":86380769,"identity":"cbcc8af9-523a-4bbb-a0df-7090f0c0f848","added_by":"auto","created_at":"2025-07-10 04:10:00","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":878031,"visible":true,"origin":"","legend":"","description":"","filename":"finalmanuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6911250/v1_covered_2f484346-f9bd-43c5-a3eb-60b82bed3106.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Dual functional Device Featuring Absorption and Polarization Conversion Based on Temperature Controlled Metasurface for Terahertz Applications","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"Polarization Converter, Absorber, Phase Change Material, Vanadium dioxide","lastPublishedDoi":"10.21203/rs.3.rs-6911250/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6911250/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThis study presents the development of a dual-functional terahertz device based on a metasurface layer combining metallic and vanadium dioxide (VO\u003csub\u003e2\u003c/sub\u003e) elements. The proposed metasurface is controllable through the temperature-tuning properties of VO\u003csub\u003e2\u003c/sub\u003e and leads to the performance of absorption and polarization conversion with metal-insulator transition properties of VO\u003csub\u003e2\u003c/sub\u003e. The unit cell of the proposed structure consists of a metasurface layer including a metallic large square ring with four gaps filled by VO\u003csub\u003e2\u003c/sub\u003e, alongside a smaller VO\u003csub\u003e2\u003c/sub\u003e square ring deposited on dielectric layer above a reflective ground plane separated by an air spacer. VO\u003csub\u003e2\u003c/sub\u003e exhibits a reversible metal\u0026ndash;insulator phase transition at 68\u0026deg;C, which is accompanied by a remarkable change in both electrical and optical properties. 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