A New Mechanism for THz Detection Based on the Tunneling Effect in Bi-Layer Graphene Nanoribbons
A new possible mechanism of signal detection in the THz range is investigated, based on the excitation of resonances due to the tunneling effect between two graphene nanoribbons. A simple detector is proposed, where two graphene nanoribbons are used to contact two copper electrodes. The terminal vol...
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-11-01
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| Series: | Applied Sciences |
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| Online Access: | http://www.mdpi.com/2076-3417/5/4/1102 |
| _version_ | 1818944924445310976 |
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| author | Antonio Maffucci |
| author_facet | Antonio Maffucci |
| author_sort | Antonio Maffucci |
| collection | DOAJ |
| description | A new possible mechanism of signal detection in the THz range is investigated, based on the excitation of resonances due to the tunneling effect between two graphene nanoribbons. A simple detector is proposed, where two graphene nanoribbons are used to contact two copper electrodes. The terminal voltages are shown to exhibit strong resonances when the frequency of an external impinging field is tuned to the characteristic tunneling frequency of the graphene layer pair. An electrodynamic model for the electron transport along the graphene nanoribbons is extended here to include the tunneling effect, and a coupled transmission line model is finally derived. This model is able to predict not only the tunneling resonance, but also the well-known plasmon resonances, related to the propagation of slow surface waves. |
| first_indexed | 2024-12-20T07:50:57Z |
| format | Article |
| id | doaj.art-cf9ebe9500274431ad590920d9d01867 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-20T07:50:57Z |
| publishDate | 2015-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-cf9ebe9500274431ad590920d9d018672022-12-21T19:47:51ZengMDPI AGApplied Sciences2076-34172015-11-01541102111610.3390/app5041102app5041102A New Mechanism for THz Detection Based on the Tunneling Effect in Bi-Layer Graphene NanoribbonsAntonio Maffucci0Department of Electrical and Information Engineering, University of Cassino and Southern Lazio, via G. Di Biasio 43, Cassino 03043, ItalyA new possible mechanism of signal detection in the THz range is investigated, based on the excitation of resonances due to the tunneling effect between two graphene nanoribbons. A simple detector is proposed, where two graphene nanoribbons are used to contact two copper electrodes. The terminal voltages are shown to exhibit strong resonances when the frequency of an external impinging field is tuned to the characteristic tunneling frequency of the graphene layer pair. An electrodynamic model for the electron transport along the graphene nanoribbons is extended here to include the tunneling effect, and a coupled transmission line model is finally derived. This model is able to predict not only the tunneling resonance, but also the well-known plasmon resonances, related to the propagation of slow surface waves.http://www.mdpi.com/2076-3417/5/4/1102graphenegraphene nanoribbonsterahertz electronicstunneling effect |
| spellingShingle | Antonio Maffucci A New Mechanism for THz Detection Based on the Tunneling Effect in Bi-Layer Graphene Nanoribbons Applied Sciences graphene graphene nanoribbons terahertz electronics tunneling effect |
| title | A New Mechanism for THz Detection Based on the Tunneling Effect in Bi-Layer Graphene Nanoribbons |
| title_full | A New Mechanism for THz Detection Based on the Tunneling Effect in Bi-Layer Graphene Nanoribbons |
| title_fullStr | A New Mechanism for THz Detection Based on the Tunneling Effect in Bi-Layer Graphene Nanoribbons |
| title_full_unstemmed | A New Mechanism for THz Detection Based on the Tunneling Effect in Bi-Layer Graphene Nanoribbons |
| title_short | A New Mechanism for THz Detection Based on the Tunneling Effect in Bi-Layer Graphene Nanoribbons |
| title_sort | new mechanism for thz detection based on the tunneling effect in bi layer graphene nanoribbons |
| topic | graphene graphene nanoribbons terahertz electronics tunneling effect |
| url | http://www.mdpi.com/2076-3417/5/4/1102 |
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