Spectrometer-Free Graphene Plasmonics Based Refractive Index Sensor
We propose a spectrometer-free refractive index sensor based on a graphene plasmonic structure. The spectrometer-free feature of the device is realized thanks to the dynamic tunability of graphene’s chemical potential, through electrostatic biasing. The proposed sensor exhibits a 1566 nm/RIU sensiti...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/8/2347 |
| _version_ | 1827718341140152320 |
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| author | Li Zhang Mohamed Farhat Khaled Nabil Salama |
| author_facet | Li Zhang Mohamed Farhat Khaled Nabil Salama |
| author_sort | Li Zhang |
| collection | DOAJ |
| description | We propose a spectrometer-free refractive index sensor based on a graphene plasmonic structure. The spectrometer-free feature of the device is realized thanks to the dynamic tunability of graphene’s chemical potential, through electrostatic biasing. The proposed sensor exhibits a 1566 nm/RIU sensitivity, a 250.6 RIU<sup>−1</sup> figure of merit in the optical mode of operation and a 713.2 meV/RIU sensitivity, a 246.8 RIU<sup>−1</sup> figure of merit in the electrical mode of operation. This performance outlines the optimized operation of this spectrometer-free sensor that simplifies its design and can bring terahertz sensing one step closer to its practical realization, with promising applications in biosensing and/or gas sensing. |
| first_indexed | 2024-03-10T20:20:48Z |
| format | Article |
| id | doaj.art-f1b2708b57d9416d9c63e686c3865d26 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T20:20:48Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-f1b2708b57d9416d9c63e686c3865d262023-11-19T22:12:09ZengMDPI AGSensors1424-82202020-04-01208234710.3390/s20082347Spectrometer-Free Graphene Plasmonics Based Refractive Index SensorLi Zhang0Mohamed Farhat1Khaled Nabil Salama2Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi ArabiaSensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi ArabiaSensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi ArabiaWe propose a spectrometer-free refractive index sensor based on a graphene plasmonic structure. The spectrometer-free feature of the device is realized thanks to the dynamic tunability of graphene’s chemical potential, through electrostatic biasing. The proposed sensor exhibits a 1566 nm/RIU sensitivity, a 250.6 RIU<sup>−1</sup> figure of merit in the optical mode of operation and a 713.2 meV/RIU sensitivity, a 246.8 RIU<sup>−1</sup> figure of merit in the electrical mode of operation. This performance outlines the optimized operation of this spectrometer-free sensor that simplifies its design and can bring terahertz sensing one step closer to its practical realization, with promising applications in biosensing and/or gas sensing.https://www.mdpi.com/1424-8220/20/8/2347spectrometer-free sensinggraphene plasmonicsoptical refractive index sensor |
| spellingShingle | Li Zhang Mohamed Farhat Khaled Nabil Salama Spectrometer-Free Graphene Plasmonics Based Refractive Index Sensor Sensors spectrometer-free sensing graphene plasmonics optical refractive index sensor |
| title | Spectrometer-Free Graphene Plasmonics Based Refractive Index Sensor |
| title_full | Spectrometer-Free Graphene Plasmonics Based Refractive Index Sensor |
| title_fullStr | Spectrometer-Free Graphene Plasmonics Based Refractive Index Sensor |
| title_full_unstemmed | Spectrometer-Free Graphene Plasmonics Based Refractive Index Sensor |
| title_short | Spectrometer-Free Graphene Plasmonics Based Refractive Index Sensor |
| title_sort | spectrometer free graphene plasmonics based refractive index sensor |
| topic | spectrometer-free sensing graphene plasmonics optical refractive index sensor |
| url | https://www.mdpi.com/1424-8220/20/8/2347 |
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