A High-Sensitivity Fiber Biosensor Based on PVDF-Excited Surface Plasmon Resonance in the Terahertz Band
In this paper, a D-type photonic crystal fiber (PCF) with Zeonex material as the substrate and polyvinylidene fluoride (PVDF) material as the surface plasmon resonance (SPR) excitation layer is proposed for biosensing in the terahertz (THz) band. Analyzed with a finite element method, the proposed b...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-10-01
|
| Series: | Photonics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-6732/10/10/1159 |
| _version_ | 1797572601137070080 |
|---|---|
| author | Yani Zhang Yiming Yao Zhe Guang Jia Xue Qiuyang Wang Jiaqin Gong Zohaib Ali Zhongtian Yang |
| author_facet | Yani Zhang Yiming Yao Zhe Guang Jia Xue Qiuyang Wang Jiaqin Gong Zohaib Ali Zhongtian Yang |
| author_sort | Yani Zhang |
| collection | DOAJ |
| description | In this paper, a D-type photonic crystal fiber (PCF) with Zeonex material as the substrate and polyvinylidene fluoride (PVDF) material as the surface plasmon resonance (SPR) excitation layer is proposed for biosensing in the terahertz (THz) band. Analyzed with a finite element method, the proposed biosensor has shown excellent sensing properties for analyte refractive indices ranging from 1.32 to 1.45. With a maximum sensor resolution of 8.40 × 10<sup>−7</sup> refractive index unit (RIU) and a figure of merit of 39.42 RIU<sup>−1</sup>, the maximum wavelength sensitivity and amplitude sensitivity can reach 335.00 μm/RIU and −66.01 RIU<sup>−1</sup>, respectively. A ±2% fabrication tolerance analysis is also performed on the biosensor to prove its practical feasibility. We conclude that our proposed PCF biosensor utilizing PVDF-excited SPR can provide high sensitivity, and thus a compact, label-free, and convenient solution for biomedical liquid sensing in the THz band. |
| first_indexed | 2024-03-10T20:58:08Z |
| format | Article |
| id | doaj.art-f97cffd9a2e44587baa67de25ae9616b |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T20:58:08Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-f97cffd9a2e44587baa67de25ae9616b2023-11-19T17:47:51ZengMDPI AGPhotonics2304-67322023-10-011010115910.3390/photonics10101159A High-Sensitivity Fiber Biosensor Based on PVDF-Excited Surface Plasmon Resonance in the Terahertz BandYani Zhang0Yiming Yao1Zhe Guang2Jia Xue3Qiuyang Wang4Jiaqin Gong5Zohaib Ali6Zhongtian Yang7Department of Physics, School of Arts & Sciences, Shaanxi University of Science & Technology, Xi’an 710021, ChinaDepartment of Physics, School of Arts & Sciences, Shaanxi University of Science & Technology, Xi’an 710021, ChinaSchool of Physics, Georgia Institute of Technology, 837 State Street NW, Atlanta, GA 30332, USADepartment of Physics, School of Arts & Sciences, Shaanxi University of Science & Technology, Xi’an 710021, ChinaDepartment of Physics, School of Arts & Sciences, Shaanxi University of Science & Technology, Xi’an 710021, ChinaDepartment of Physics, School of Arts & Sciences, Shaanxi University of Science & Technology, Xi’an 710021, ChinaSchool of Physics, Georgia Institute of Technology, 837 State Street NW, Atlanta, GA 30332, USADepartment of Biomedical Engineering, Georgia Institute of Technology, 313 Ferst Dr NW, Atlanta, GA 30332, USAIn this paper, a D-type photonic crystal fiber (PCF) with Zeonex material as the substrate and polyvinylidene fluoride (PVDF) material as the surface plasmon resonance (SPR) excitation layer is proposed for biosensing in the terahertz (THz) band. Analyzed with a finite element method, the proposed biosensor has shown excellent sensing properties for analyte refractive indices ranging from 1.32 to 1.45. With a maximum sensor resolution of 8.40 × 10<sup>−7</sup> refractive index unit (RIU) and a figure of merit of 39.42 RIU<sup>−1</sup>, the maximum wavelength sensitivity and amplitude sensitivity can reach 335.00 μm/RIU and −66.01 RIU<sup>−1</sup>, respectively. A ±2% fabrication tolerance analysis is also performed on the biosensor to prove its practical feasibility. We conclude that our proposed PCF biosensor utilizing PVDF-excited SPR can provide high sensitivity, and thus a compact, label-free, and convenient solution for biomedical liquid sensing in the THz band.https://www.mdpi.com/2304-6732/10/10/1159biosensorphotonic crystal fibersurface plasmon resonanceterahertzpolyvinylidene fluoride |
| spellingShingle | Yani Zhang Yiming Yao Zhe Guang Jia Xue Qiuyang Wang Jiaqin Gong Zohaib Ali Zhongtian Yang A High-Sensitivity Fiber Biosensor Based on PVDF-Excited Surface Plasmon Resonance in the Terahertz Band Photonics biosensor photonic crystal fiber surface plasmon resonance terahertz polyvinylidene fluoride |
| title | A High-Sensitivity Fiber Biosensor Based on PVDF-Excited Surface Plasmon Resonance in the Terahertz Band |
| title_full | A High-Sensitivity Fiber Biosensor Based on PVDF-Excited Surface Plasmon Resonance in the Terahertz Band |
| title_fullStr | A High-Sensitivity Fiber Biosensor Based on PVDF-Excited Surface Plasmon Resonance in the Terahertz Band |
| title_full_unstemmed | A High-Sensitivity Fiber Biosensor Based on PVDF-Excited Surface Plasmon Resonance in the Terahertz Band |
| title_short | A High-Sensitivity Fiber Biosensor Based on PVDF-Excited Surface Plasmon Resonance in the Terahertz Band |
| title_sort | high sensitivity fiber biosensor based on pvdf excited surface plasmon resonance in the terahertz band |
| topic | biosensor photonic crystal fiber surface plasmon resonance terahertz polyvinylidene fluoride |
| url | https://www.mdpi.com/2304-6732/10/10/1159 |
| work_keys_str_mv | AT yanizhang ahighsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT yimingyao ahighsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT zheguang ahighsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT jiaxue ahighsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT qiuyangwang ahighsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT jiaqingong ahighsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT zohaibali ahighsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT zhongtianyang ahighsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT yanizhang highsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT yimingyao highsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT zheguang highsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT jiaxue highsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT qiuyangwang highsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT jiaqingong highsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT zohaibali highsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband AT zhongtianyang highsensitivityfiberbiosensorbasedonpvdfexcitedsurfaceplasmonresonanceintheterahertzband |