Thin Dielectric Layers Evaluation Using Tunable Split-Ring Resonator Based Metasurface in THz Frequency Range
The paper presents the evaluation of thin dielectric layers using a tunable split-ring resonator-based metasurface in the THz frequency range. Tunable unit cells of a metasurface allow its resonant frequency variation using some external excitation. This can be done in various ways. In this work, th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/17/8526 |
| _version_ | 1797496424068284416 |
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| author | Paulina Gora Przemyslaw Lopato |
| author_facet | Paulina Gora Przemyslaw Lopato |
| author_sort | Paulina Gora |
| collection | DOAJ |
| description | The paper presents the evaluation of thin dielectric layers using a tunable split-ring resonator-based metasurface in the THz frequency range. Tunable unit cells of a metasurface allow its resonant frequency variation using some external excitation. This can be done in various ways. In this work, the behavior of such a metasurface is investigated by monitoring the resonant frequency value when the unit cell geometry is changed. Such behavior is utilized for the quality evaluation of a thin dielectric layer placed in vicinity of a metasurface. A change in dielectric permittivity noticeably affects the resonant frequency of a metasurface. In order to examine the state of the material under test, finite element method simulations were made for a 15 µm thin layer. As a result, the approximation-based relations between resonant frequencies (obtained for various geometries of structural element—in tunability range) and dielectric parameters of the examined material were derived. These relations carry more information than in the case of just one resonant frequency (the case of a non-tunable metasurface) and can be utilized for permittivity evaluation. |
| first_indexed | 2024-03-10T03:03:25Z |
| format | Article |
| id | doaj.art-1ba8bbb527564d86a9992099562e356d |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T03:03:25Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-1ba8bbb527564d86a9992099562e356d2023-11-23T12:41:08ZengMDPI AGApplied Sciences2076-34172022-08-011217852610.3390/app12178526Thin Dielectric Layers Evaluation Using Tunable Split-Ring Resonator Based Metasurface in THz Frequency RangePaulina Gora0Przemyslaw Lopato1Center for Electromagnetic Fields Engineering and High-Frequency Techniques, Faculty of Electrical Engineering, West Pomeranian University of Technology, ul. Sikorskiego 37, 70-313 Szczecin, PolandCenter for Electromagnetic Fields Engineering and High-Frequency Techniques, Faculty of Electrical Engineering, West Pomeranian University of Technology, ul. Sikorskiego 37, 70-313 Szczecin, PolandThe paper presents the evaluation of thin dielectric layers using a tunable split-ring resonator-based metasurface in the THz frequency range. Tunable unit cells of a metasurface allow its resonant frequency variation using some external excitation. This can be done in various ways. In this work, the behavior of such a metasurface is investigated by monitoring the resonant frequency value when the unit cell geometry is changed. Such behavior is utilized for the quality evaluation of a thin dielectric layer placed in vicinity of a metasurface. A change in dielectric permittivity noticeably affects the resonant frequency of a metasurface. In order to examine the state of the material under test, finite element method simulations were made for a 15 µm thin layer. As a result, the approximation-based relations between resonant frequencies (obtained for various geometries of structural element—in tunability range) and dielectric parameters of the examined material were derived. These relations carry more information than in the case of just one resonant frequency (the case of a non-tunable metasurface) and can be utilized for permittivity evaluation.https://www.mdpi.com/2076-3417/12/17/8526metamaterialstunable metasurfacesmaterials evaluationthin dielectric layersterahertz electromagnetic wavessensor |
| spellingShingle | Paulina Gora Przemyslaw Lopato Thin Dielectric Layers Evaluation Using Tunable Split-Ring Resonator Based Metasurface in THz Frequency Range Applied Sciences metamaterials tunable metasurfaces materials evaluation thin dielectric layers terahertz electromagnetic waves sensor |
| title | Thin Dielectric Layers Evaluation Using Tunable Split-Ring Resonator Based Metasurface in THz Frequency Range |
| title_full | Thin Dielectric Layers Evaluation Using Tunable Split-Ring Resonator Based Metasurface in THz Frequency Range |
| title_fullStr | Thin Dielectric Layers Evaluation Using Tunable Split-Ring Resonator Based Metasurface in THz Frequency Range |
| title_full_unstemmed | Thin Dielectric Layers Evaluation Using Tunable Split-Ring Resonator Based Metasurface in THz Frequency Range |
| title_short | Thin Dielectric Layers Evaluation Using Tunable Split-Ring Resonator Based Metasurface in THz Frequency Range |
| title_sort | thin dielectric layers evaluation using tunable split ring resonator based metasurface in thz frequency range |
| topic | metamaterials tunable metasurfaces materials evaluation thin dielectric layers terahertz electromagnetic waves sensor |
| url | https://www.mdpi.com/2076-3417/12/17/8526 |
| work_keys_str_mv | AT paulinagora thindielectriclayersevaluationusingtunablesplitringresonatorbasedmetasurfaceinthzfrequencyrange AT przemyslawlopato thindielectriclayersevaluationusingtunablesplitringresonatorbasedmetasurfaceinthzfrequencyrange |