Non-Linear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS
We demonstrate that the conductivity of graphene on thin-film polymer substrates can be accurately determined by reflection-mode air-plasma-based THz time-domain spectroscopy (THz-TDS). The phase uncertainty issue associated with reflection measurements is discussed, and our implementation is valida...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/7/3669 |
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| author | Binbin Zhou Mattias Rasmussen Patrick Rebsdorf Whelan Jie Ji Abhay Shivayogimath Peter Bøggild Peter Uhd Jepsen |
| author_facet | Binbin Zhou Mattias Rasmussen Patrick Rebsdorf Whelan Jie Ji Abhay Shivayogimath Peter Bøggild Peter Uhd Jepsen |
| author_sort | Binbin Zhou |
| collection | DOAJ |
| description | We demonstrate that the conductivity of graphene on thin-film polymer substrates can be accurately determined by reflection-mode air-plasma-based THz time-domain spectroscopy (THz-TDS). The phase uncertainty issue associated with reflection measurements is discussed, and our implementation is validated by convincing agreement with graphene electrical properties extracted from more conventional transmission-mode measurements. Both the reflection and transmission THz-TDS measurements reveal strong non-linear and instantaneous conductivity depletion across an ultra-broad bandwidth (1–9 THz) under relatively high incident THz electrical field strengths (up to 1050 kV/cm). |
| first_indexed | 2024-03-11T05:25:15Z |
| format | Article |
| id | doaj.art-df473ef79d58425e92888212d18015ec |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T05:25:15Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-df473ef79d58425e92888212d18015ec2023-11-17T17:35:59ZengMDPI AGSensors1424-82202023-03-01237366910.3390/s23073669Non-Linear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDSBinbin Zhou0Mattias Rasmussen1Patrick Rebsdorf Whelan2Jie Ji3Abhay Shivayogimath4Peter Bøggild5Peter Uhd Jepsen6Department of Electrical and Photonics Engineering, Technical University of Denmark, 2800 Kongens Lyngby, DenmarkDepartment of Electrical and Photonics Engineering, Technical University of Denmark, 2800 Kongens Lyngby, DenmarkDepartment of Physics, Technical University of Denmark, 2800 Kongens Lyngby, DenmarkDepartment of Physics, Technical University of Denmark, 2800 Kongens Lyngby, DenmarkDepartment of Physics, Technical University of Denmark, 2800 Kongens Lyngby, DenmarkDepartment of Physics, Technical University of Denmark, 2800 Kongens Lyngby, DenmarkDepartment of Electrical and Photonics Engineering, Technical University of Denmark, 2800 Kongens Lyngby, DenmarkWe demonstrate that the conductivity of graphene on thin-film polymer substrates can be accurately determined by reflection-mode air-plasma-based THz time-domain spectroscopy (THz-TDS). The phase uncertainty issue associated with reflection measurements is discussed, and our implementation is validated by convincing agreement with graphene electrical properties extracted from more conventional transmission-mode measurements. Both the reflection and transmission THz-TDS measurements reveal strong non-linear and instantaneous conductivity depletion across an ultra-broad bandwidth (1–9 THz) under relatively high incident THz electrical field strengths (up to 1050 kV/cm).https://www.mdpi.com/1424-8220/23/7/3669grapheneAC conductivityTHz time-domain spectroscopyreflection spectroscopy |
| spellingShingle | Binbin Zhou Mattias Rasmussen Patrick Rebsdorf Whelan Jie Ji Abhay Shivayogimath Peter Bøggild Peter Uhd Jepsen Non-Linear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS Sensors graphene AC conductivity THz time-domain spectroscopy reflection spectroscopy |
| title | Non-Linear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS |
| title_full | Non-Linear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS |
| title_fullStr | Non-Linear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS |
| title_full_unstemmed | Non-Linear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS |
| title_short | Non-Linear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS |
| title_sort | non linear conductivity response of graphene on thin film pet characterized by transmission and reflection air plasma thz tds |
| topic | graphene AC conductivity THz time-domain spectroscopy reflection spectroscopy |
| url | https://www.mdpi.com/1424-8220/23/7/3669 |
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