Graphene Conductivity Mapping using Terahertz Time-Domain Reflection Spectroscopy
| Autor: | Harvey E. Beere, Riccardo Dcgl'Innoccnti, David A. Ritchie, D. S. Jessop, Stephan Hofmann, Philipp Braeuninzer-Weimer, J. Axel Zeitler, Varun S. Kamboi, Hungyen Lin |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Graphene business.industry Terahertz radiation 02 engineering and technology Conductivity 021001 nanoscience & nanotechnology 01 natural sciences law.invention Reflection (mathematics) Transmission (telecommunications) law 0103 physical sciences Sapphire Optoelectronics Time domain 010306 general physics 0210 nano-technology business Spectroscopy |
| Zdroj: | 2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). |
| Popis: | Graphene conductivity mapping was successfully demonstrated using terahertz time-domain spectroscopy (THz-TDS) operating in transmission geometry. In order to cater for a greater range of substrates and scenarios where transmission geometry becomes prohibitive, here we demonstrate conductivity mapping of large area chemical vapor deposited (CVD) graphene films on sapphire. We validate the technique against measurements performed using the transmission based THz- TDS. |
| Databáze: | OpenAIRE |
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