Multifunctional voltage and temperature controlled metasurface using graphene and vanadium dioxide for terahertz applications.
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| Title: | Multifunctional voltage and temperature controlled metasurface using graphene and vanadium dioxide for terahertz applications. |
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| Authors: | Mistri, Hiranmay1 (AUTHOR) hiranmaymistri@rkmgec.ac.in, Ghosh, Anumoy2 (AUTHOR), Sardar, Abdur Rahaman1 (AUTHOR), Roy, Pabitra1 (AUTHOR) |
| Source: | Optical & Quantum Electronics. Jun2025, Vol. 57 Issue 6, p1-24. 24p. |
| Subjects: | Vanadium dioxide, Unit cell, Temperature control, Silica, Voltage control |
| Abstract: | This paper presents a metasurface with multiple functionalities designed for terahertz (THz) frequency applications, utilizing graphene and vanadium dioxide (VO2). The proposed metasurface is controllable through the voltage-tuning properties of graphene and the temperature-tuning properties of VO2. The unit cell is comprised of a silicon dioxide (SiO2) substrate and reflective ground made of gold. The top layer is composed of a diagonally connected split hexagon (DCSH) made using the combination of graphene and VO2. In normal room temperature (298 K), i.e., at the insulating state of VO2, the metasurface operates as a linear-to-linear cross polarization converter (LTLPC) for the frequency band 1.61 THz to 1.88 THz, i.e., 15.47% fractional bandwidth (FBW) and a linear-to-circular polarization converter (LTCPC) from 2.46 THz to 3.10 THz, i.e., 23% FBW and a triple band absorber with absorption maxima at 1.51 THz, 2.52 THz, and 3.59 THz having 100%, 99.3%, and 84.3% absorptions, respectively. In higher temperatures (above 351 K), i.e., in the metallic state of VO2, the metasurface operates as an LTLPC for the frequency band 1.60 THz to 3.26 THz, i.e., 68.31% FBW, and a dual-band absorbers at frequency at 1.50 THz and, 3.31 THz with 100% and 99.2% absorptions. The equivalent circuit models of the metasurface are presented for insulating and metallic states. The device's performance exhibits uniformity of response up to 40° incident angle variations for the insulating state as well as for the metallic state of VO2. It offers excellent dynamic switching capability, versatile tunability, and multimodal operations for terahertz applications. [ABSTRACT FROM AUTHOR] |
| Copyright of Optical & Quantum Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 186289940 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Multifunctional voltage and temperature controlled metasurface using graphene and vanadium dioxide for terahertz applications. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Mistri%2C+Hiranmay%22">Mistri, Hiranmay</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> hiranmaymistri@rkmgec.ac.in</i><br /><searchLink fieldCode="AR" term="%22Ghosh%2C+Anumoy%22">Ghosh, Anumoy</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sardar%2C+Abdur+Rahaman%22">Sardar, Abdur Rahaman</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Roy%2C+Pabitra%22">Roy, Pabitra</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Optical+%26+Quantum+Electronics%22">Optical & Quantum Electronics</searchLink>. Jun2025, Vol. 57 Issue 6, p1-24. 24p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Vanadium+dioxide%22">Vanadium dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Unit+cell%22">Unit cell</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+control%22">Temperature control</searchLink><br /><searchLink fieldCode="DE" term="%22Silica%22">Silica</searchLink><br /><searchLink fieldCode="DE" term="%22Voltage+control%22">Voltage control</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper presents a metasurface with multiple functionalities designed for terahertz (THz) frequency applications, utilizing graphene and vanadium dioxide (VO2). The proposed metasurface is controllable through the voltage-tuning properties of graphene and the temperature-tuning properties of VO2. The unit cell is comprised of a silicon dioxide (SiO2) substrate and reflective ground made of gold. The top layer is composed of a diagonally connected split hexagon (DCSH) made using the combination of graphene and VO2. In normal room temperature (298 K), i.e., at the insulating state of VO2, the metasurface operates as a linear-to-linear cross polarization converter (LTLPC) for the frequency band 1.61 THz to 1.88 THz, i.e., 15.47% fractional bandwidth (FBW) and a linear-to-circular polarization converter (LTCPC) from 2.46 THz to 3.10 THz, i.e., 23% FBW and a triple band absorber with absorption maxima at 1.51 THz, 2.52 THz, and 3.59 THz having 100%, 99.3%, and 84.3% absorptions, respectively. In higher temperatures (above 351 K), i.e., in the metallic state of VO2, the metasurface operates as an LTLPC for the frequency band 1.60 THz to 3.26 THz, i.e., 68.31% FBW, and a dual-band absorbers at frequency at 1.50 THz and, 3.31 THz with 100% and 99.2% absorptions. The equivalent circuit models of the metasurface are presented for insulating and metallic states. The device's performance exhibits uniformity of response up to 40° incident angle variations for the insulating state as well as for the metallic state of VO2. It offers excellent dynamic switching capability, versatile tunability, and multimodal operations for terahertz applications. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Optical & Quantum Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11082-025-08246-5 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 24 StartPage: 1 Subjects: – SubjectFull: Vanadium dioxide Type: general – SubjectFull: Unit cell Type: general – SubjectFull: Temperature control Type: general – SubjectFull: Silica Type: general – SubjectFull: Voltage control Type: general Titles: – TitleFull: Multifunctional voltage and temperature controlled metasurface using graphene and vanadium dioxide for terahertz applications. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Mistri, Hiranmay – PersonEntity: Name: NameFull: Ghosh, Anumoy – PersonEntity: Name: NameFull: Sardar, Abdur Rahaman – PersonEntity: Name: NameFull: Roy, Pabitra IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 03068919 Numbering: – Type: volume Value: 57 – Type: issue Value: 6 Titles: – TitleFull: Optical & Quantum Electronics Type: main |
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