Extremely Sensitive Microwave Microfluidic Dielectric Sensor Using a Transmission Line Loaded with Shunt LC Resonators
In this paper, a very high sensitivity microwave-based planar microfluidic sensor is presented. Sensitivity enhancement is achieved and described theoretically and experimentally by eliminating any extra parasitic capacitance not contributing to the sensing mechanism. The sensor consists of a micros...
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| Format: | Article |
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MDPI AG
2021-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/20/6811 |
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| author | Haneen Abdelwahab Amir Ebrahimi Francisco J. Tovar-Lopez Grzegorz Beziuk Kamran Ghorbani |
| author_facet | Haneen Abdelwahab Amir Ebrahimi Francisco J. Tovar-Lopez Grzegorz Beziuk Kamran Ghorbani |
| author_sort | Haneen Abdelwahab |
| collection | DOAJ |
| description | In this paper, a very high sensitivity microwave-based planar microfluidic sensor is presented. Sensitivity enhancement is achieved and described theoretically and experimentally by eliminating any extra parasitic capacitance not contributing to the sensing mechanism. The sensor consists of a microstrip transmission line loaded with a series connected shunt LC resonator. A microfluidic channel is attached to the area of the highest electric field concentration. The electric field distribution and, therefore, the resonance characteristics are modified by applying microfluidic dielectric samples to the sensing area. The sensor performance and working principle are described through a circuit model analysis. A device prototype is fabricated, and experimental measurements using water/ethanol and water/methanol solutions are presented for validation of the sensing mathematical model. |
| first_indexed | 2024-03-10T06:13:22Z |
| format | Article |
| id | doaj.art-72285534b10c4c03af998d14ee9dce9f |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T06:13:22Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-72285534b10c4c03af998d14ee9dce9f2023-11-22T19:57:50ZengMDPI AGSensors1424-82202021-10-012120681110.3390/s21206811Extremely Sensitive Microwave Microfluidic Dielectric Sensor Using a Transmission Line Loaded with Shunt LC ResonatorsHaneen Abdelwahab0Amir Ebrahimi1Francisco J. Tovar-Lopez2Grzegorz Beziuk3Kamran Ghorbani4School of Engineering, RMIT University, Melbourne, VIC 3001, AustraliaSchool of Engineering, RMIT University, Melbourne, VIC 3001, AustraliaSchool of Engineering, RMIT University, Melbourne, VIC 3001, AustraliaSchool of Engineering, RMIT University, Melbourne, VIC 3001, AustraliaSchool of Engineering, RMIT University, Melbourne, VIC 3001, AustraliaIn this paper, a very high sensitivity microwave-based planar microfluidic sensor is presented. Sensitivity enhancement is achieved and described theoretically and experimentally by eliminating any extra parasitic capacitance not contributing to the sensing mechanism. The sensor consists of a microstrip transmission line loaded with a series connected shunt LC resonator. A microfluidic channel is attached to the area of the highest electric field concentration. The electric field distribution and, therefore, the resonance characteristics are modified by applying microfluidic dielectric samples to the sensing area. The sensor performance and working principle are described through a circuit model analysis. A device prototype is fabricated, and experimental measurements using water/ethanol and water/methanol solutions are presented for validation of the sensing mathematical model.https://www.mdpi.com/1424-8220/21/20/6811dielectric measurementmicrofluidic sensormicrowave sensorplanar resonators |
| spellingShingle | Haneen Abdelwahab Amir Ebrahimi Francisco J. Tovar-Lopez Grzegorz Beziuk Kamran Ghorbani Extremely Sensitive Microwave Microfluidic Dielectric Sensor Using a Transmission Line Loaded with Shunt LC Resonators Sensors dielectric measurement microfluidic sensor microwave sensor planar resonators |
| title | Extremely Sensitive Microwave Microfluidic Dielectric Sensor Using a Transmission Line Loaded with Shunt LC Resonators |
| title_full | Extremely Sensitive Microwave Microfluidic Dielectric Sensor Using a Transmission Line Loaded with Shunt LC Resonators |
| title_fullStr | Extremely Sensitive Microwave Microfluidic Dielectric Sensor Using a Transmission Line Loaded with Shunt LC Resonators |
| title_full_unstemmed | Extremely Sensitive Microwave Microfluidic Dielectric Sensor Using a Transmission Line Loaded with Shunt LC Resonators |
| title_short | Extremely Sensitive Microwave Microfluidic Dielectric Sensor Using a Transmission Line Loaded with Shunt LC Resonators |
| title_sort | extremely sensitive microwave microfluidic dielectric sensor using a transmission line loaded with shunt lc resonators |
| topic | dielectric measurement microfluidic sensor microwave sensor planar resonators |
| url | https://www.mdpi.com/1424-8220/21/20/6811 |
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