VO2-metallic hybrid metasurfaces for agile terahertz wave modulation by phase transition
The combination of VO2 and metasurfaces has opened an attractive route to dynamically control terahertz (THz) waves based on the giant conductivity change. However, the high-precision control of microfabrication and single performance of conductivity change limit the multifunctional application of V...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2022-03-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/5.0081244 |
| _version_ | 1819010414271266816 |
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| author | Hongfu Zhu Jiang Li Lianghui Du Lijun Shan Peng Li Xueguang Lu Tangdong Feng Sujit Das Wanxia Huang Qiwu Shi Liguo Zhu |
| author_facet | Hongfu Zhu Jiang Li Lianghui Du Lijun Shan Peng Li Xueguang Lu Tangdong Feng Sujit Das Wanxia Huang Qiwu Shi Liguo Zhu |
| author_sort | Hongfu Zhu |
| collection | DOAJ |
| description | The combination of VO2 and metasurfaces has opened an attractive route to dynamically control terahertz (THz) waves based on the giant conductivity change. However, the high-precision control of microfabrication and single performance of conductivity change limit the multifunctional application of VO2-based metasurfaces. Here, we proposed a VO2-metallic hybrid metasurface by in situ depositing high-quality VO2 thin films onto a metasurface composed of asymmetric Fano resonance units. It exhibits agile frequency and amplitude modulation for THz transmission across tuning the dielectric constant and conductivity of VO2. The metallic metasurface is designed as a matrix to achieve high transmission at 0.61 and 0.78 THz due to the split-ring resonance. During the thermally triggered phase transition of VO2, we found that the resonance frequency and amplitude can be tuned dominantly by the change of dielectric constant and conductivity, respectively. In particular, the increased dielectric constant enables red shift of the frequency by around 0.48 THz and the conductivity increases lead to a giant THz amplitude modulation of 88%. These results provide a route for developing VO2-based THz smart devices combined with functional metasurfaces and hold great promise for applications in THz sensor and modulation. |
| first_indexed | 2024-12-21T01:11:53Z |
| format | Article |
| id | doaj.art-18d7290435f54cb7973f9ffc384e01d7 |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-12-21T01:11:53Z |
| publishDate | 2022-03-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-18d7290435f54cb7973f9ffc384e01d72022-12-21T19:20:54ZengAIP Publishing LLCAPL Materials2166-532X2022-03-01103031112031112-810.1063/5.0081244VO2-metallic hybrid metasurfaces for agile terahertz wave modulation by phase transitionHongfu Zhu0Jiang Li1Lianghui Du2Lijun Shan3Peng Li4Xueguang Lu5Tangdong Feng6Sujit Das7Wanxia Huang8Qiwu Shi9Liguo Zhu10College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, ChinaInstitute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan 621900, ChinaInstitute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan 621900, ChinaInstitute of Applied Electronics, China Academy of Engineering Physics, Mianyang, Sichuan 621900, ChinaInstitute of Applied Electronics, China Academy of Engineering Physics, Mianyang, Sichuan 621900, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, ChinaDepartment of Material Research Centre, Indian Institute of Science, Bangalore 560012, IndiaCollege of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, ChinaInstitute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan 621900, ChinaThe combination of VO2 and metasurfaces has opened an attractive route to dynamically control terahertz (THz) waves based on the giant conductivity change. However, the high-precision control of microfabrication and single performance of conductivity change limit the multifunctional application of VO2-based metasurfaces. Here, we proposed a VO2-metallic hybrid metasurface by in situ depositing high-quality VO2 thin films onto a metasurface composed of asymmetric Fano resonance units. It exhibits agile frequency and amplitude modulation for THz transmission across tuning the dielectric constant and conductivity of VO2. The metallic metasurface is designed as a matrix to achieve high transmission at 0.61 and 0.78 THz due to the split-ring resonance. During the thermally triggered phase transition of VO2, we found that the resonance frequency and amplitude can be tuned dominantly by the change of dielectric constant and conductivity, respectively. In particular, the increased dielectric constant enables red shift of the frequency by around 0.48 THz and the conductivity increases lead to a giant THz amplitude modulation of 88%. These results provide a route for developing VO2-based THz smart devices combined with functional metasurfaces and hold great promise for applications in THz sensor and modulation.http://dx.doi.org/10.1063/5.0081244 |
| spellingShingle | Hongfu Zhu Jiang Li Lianghui Du Lijun Shan Peng Li Xueguang Lu Tangdong Feng Sujit Das Wanxia Huang Qiwu Shi Liguo Zhu VO2-metallic hybrid metasurfaces for agile terahertz wave modulation by phase transition APL Materials |
| title | VO2-metallic hybrid metasurfaces for agile terahertz wave modulation by phase transition |
| title_full | VO2-metallic hybrid metasurfaces for agile terahertz wave modulation by phase transition |
| title_fullStr | VO2-metallic hybrid metasurfaces for agile terahertz wave modulation by phase transition |
| title_full_unstemmed | VO2-metallic hybrid metasurfaces for agile terahertz wave modulation by phase transition |
| title_short | VO2-metallic hybrid metasurfaces for agile terahertz wave modulation by phase transition |
| title_sort | vo2 metallic hybrid metasurfaces for agile terahertz wave modulation by phase transition |
| url | http://dx.doi.org/10.1063/5.0081244 |
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