Terahertz Refractive Index Sensor Based on Enhanced Extraordinary Optical Transmission
This paper presents a structure for refractive index sensors in the terahertz (THz) band. The THZ sensor is studied in simulation, utilizing the strong local electromagnetic field intensity produced by the enhanced extraordinary optical transmission. Depending on the different sensing positions of t...
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| Format: | Article |
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MDPI AG
2022-11-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/12/11/1616 |
| _version_ | 1797465555097092096 |
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| author | Kaixiang Sun Jiukai Fang Yanpeng Shi Shengnan Shi Shan Zhang Jinmei Song Meiping Li Xiaodong Wang Fuhua Yang |
| author_facet | Kaixiang Sun Jiukai Fang Yanpeng Shi Shengnan Shi Shan Zhang Jinmei Song Meiping Li Xiaodong Wang Fuhua Yang |
| author_sort | Kaixiang Sun |
| collection | DOAJ |
| description | This paper presents a structure for refractive index sensors in the terahertz (THz) band. The THZ sensor is studied in simulation, utilizing the strong local electromagnetic field intensity produced by the enhanced extraordinary optical transmission. Depending on the different sensing positions of the sensor, their sensing basis is also different, such as Mie scattering, surface plasmon polaritons, etc. The sensing sensitivity based on Mie scattering can reach 51.56 GHz/RIU; meanwhile the sensing sensitivity based on surface plasmon polaritons is only 5.13 GHz/RIU. The sensor can also detect the thickness of the analyte, with the lowest detectable height of 0.2 µm. Additionally, we find that the sensitivity can be increased by replacing the silicon particle with the analyte. |
| first_indexed | 2024-03-09T18:24:09Z |
| format | Article |
| id | doaj.art-1222ae9d801d47b4b69319acc08d1292 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-09T18:24:09Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-1222ae9d801d47b4b69319acc08d12922023-11-24T08:01:55ZengMDPI AGCrystals2073-43522022-11-011211161610.3390/cryst12111616Terahertz Refractive Index Sensor Based on Enhanced Extraordinary Optical TransmissionKaixiang Sun0Jiukai Fang1Yanpeng Shi2Shengnan Shi3Shan Zhang4Jinmei Song5Meiping Li6Xiaodong Wang7Fuhua Yang8School of Microelectronics, Shandong University, Jinan 250100, ChinaSchool of Microelectronics, Shandong University, Jinan 250100, ChinaSchool of Microelectronics, Shandong University, Jinan 250100, ChinaSchool of Microelectronics, Shandong University, Jinan 250100, ChinaSchool of Microelectronics, Shandong University, Jinan 250100, ChinaSchool of Microelectronics, Shandong University, Jinan 250100, ChinaSchool of Microelectronics, Shandong University, Jinan 250100, ChinaEngineering Research Center for Semiconductor Integrated Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaEngineering Research Center for Semiconductor Integrated Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaThis paper presents a structure for refractive index sensors in the terahertz (THz) band. The THZ sensor is studied in simulation, utilizing the strong local electromagnetic field intensity produced by the enhanced extraordinary optical transmission. Depending on the different sensing positions of the sensor, their sensing basis is also different, such as Mie scattering, surface plasmon polaritons, etc. The sensing sensitivity based on Mie scattering can reach 51.56 GHz/RIU; meanwhile the sensing sensitivity based on surface plasmon polaritons is only 5.13 GHz/RIU. The sensor can also detect the thickness of the analyte, with the lowest detectable height of 0.2 µm. Additionally, we find that the sensitivity can be increased by replacing the silicon particle with the analyte.https://www.mdpi.com/2073-4352/12/11/1616refractive index sensorextraordinary optical transmissionterahertzsurface plasmon polaritons |
| spellingShingle | Kaixiang Sun Jiukai Fang Yanpeng Shi Shengnan Shi Shan Zhang Jinmei Song Meiping Li Xiaodong Wang Fuhua Yang Terahertz Refractive Index Sensor Based on Enhanced Extraordinary Optical Transmission Crystals refractive index sensor extraordinary optical transmission terahertz surface plasmon polaritons |
| title | Terahertz Refractive Index Sensor Based on Enhanced Extraordinary Optical Transmission |
| title_full | Terahertz Refractive Index Sensor Based on Enhanced Extraordinary Optical Transmission |
| title_fullStr | Terahertz Refractive Index Sensor Based on Enhanced Extraordinary Optical Transmission |
| title_full_unstemmed | Terahertz Refractive Index Sensor Based on Enhanced Extraordinary Optical Transmission |
| title_short | Terahertz Refractive Index Sensor Based on Enhanced Extraordinary Optical Transmission |
| title_sort | terahertz refractive index sensor based on enhanced extraordinary optical transmission |
| topic | refractive index sensor extraordinary optical transmission terahertz surface plasmon polaritons |
| url | https://www.mdpi.com/2073-4352/12/11/1616 |
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