Portable Measurement System for the Characterization of Capacitive Field-Effect Sensors
A user-friendly, portable, low-cost readout system for the on-site or point-of-care characterization of chemo- and biosensors based on an electrolyte–insulator–semiconductor capacitor (EISCAP) has been developed using a thumb-drive-sized commercial impedance analyzer. The system is controlled by a c...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-04-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/25/9/2681 |
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| author | Tobias Karschuck Stefan Schmidt Stefan Achtsnicht Joey Ser Ismail Bouarich Georges Aboutass Arshak Poghossian Patrick H. Wagner Michael J. Schöning |
| author_facet | Tobias Karschuck Stefan Schmidt Stefan Achtsnicht Joey Ser Ismail Bouarich Georges Aboutass Arshak Poghossian Patrick H. Wagner Michael J. Schöning |
| author_sort | Tobias Karschuck |
| collection | DOAJ |
| description | A user-friendly, portable, low-cost readout system for the on-site or point-of-care characterization of chemo- and biosensors based on an electrolyte–insulator–semiconductor capacitor (EISCAP) has been developed using a thumb-drive-sized commercial impedance analyzer. The system is controlled by a custom Python script and allows to characterize EISCAP sensors with different methods (impedance spectra, capacitance-voltage, and constant-capacitance modes), which are selected in a user interface. The performance of the portable readout system was evaluated by pH measurements and the detection of the antibiotic penicillin, hereby using EISCAPs consisting of Al/p-Si/SiO<sub>2</sub>/Ta<sub>2</sub>O<sub>5</sub> structures and compared to the results obtained with a stationary commercial impedance analyzer. Both the portable and the commercial systems provide very similar results with almost perfectly overlapping recorded EISCAP signals. The new portable system can accelerate the transition of EISCAP sensors from research laboratories to commercial end-user devices. |
| format | Article |
| id | doaj-art-2ed02f54fe1248878c83c3665581aa4e |
| institution | OA Journals |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-2ed02f54fe1248878c83c3665581aa4e2025-08-20T02:31:08ZengMDPI AGSensors1424-82202025-04-01259268110.3390/s25092681Portable Measurement System for the Characterization of Capacitive Field-Effect SensorsTobias Karschuck0Stefan Schmidt1Stefan Achtsnicht2Joey Ser3Ismail Bouarich4Georges Aboutass5Arshak Poghossian6Patrick H. Wagner7Michael J. Schöning8Institute of Nano- and Biotechnologies, FH Aachen, 52428 Jülich, GermanyInstitute of Nano- and Biotechnologies, FH Aachen, 52428 Jülich, GermanyInstitute of Nano- and Biotechnologies, FH Aachen, 52428 Jülich, GermanyInstitute of Nano- and Biotechnologies, FH Aachen, 52428 Jülich, GermanyInstitute of Nano- and Biotechnologies, FH Aachen, 52428 Jülich, GermanyInstitute of Nano- and Biotechnologies, FH Aachen, 52428 Jülich, GermanyMicroNanoBio, 40479 Düsseldorf, GermanyLaboratory for Soft Matter and Biophysics, KU Leuven, 3001 Leuven, BelgiumInstitute of Nano- and Biotechnologies, FH Aachen, 52428 Jülich, GermanyA user-friendly, portable, low-cost readout system for the on-site or point-of-care characterization of chemo- and biosensors based on an electrolyte–insulator–semiconductor capacitor (EISCAP) has been developed using a thumb-drive-sized commercial impedance analyzer. The system is controlled by a custom Python script and allows to characterize EISCAP sensors with different methods (impedance spectra, capacitance-voltage, and constant-capacitance modes), which are selected in a user interface. The performance of the portable readout system was evaluated by pH measurements and the detection of the antibiotic penicillin, hereby using EISCAPs consisting of Al/p-Si/SiO<sub>2</sub>/Ta<sub>2</sub>O<sub>5</sub> structures and compared to the results obtained with a stationary commercial impedance analyzer. Both the portable and the commercial systems provide very similar results with almost perfectly overlapping recorded EISCAP signals. The new portable system can accelerate the transition of EISCAP sensors from research laboratories to commercial end-user devices.https://www.mdpi.com/1424-8220/25/9/2681field-effect capacitorportable measurement systempH sensorpenicillin biosensor |
| spellingShingle | Tobias Karschuck Stefan Schmidt Stefan Achtsnicht Joey Ser Ismail Bouarich Georges Aboutass Arshak Poghossian Patrick H. Wagner Michael J. Schöning Portable Measurement System for the Characterization of Capacitive Field-Effect Sensors Sensors field-effect capacitor portable measurement system pH sensor penicillin biosensor |
| title | Portable Measurement System for the Characterization of Capacitive Field-Effect Sensors |
| title_full | Portable Measurement System for the Characterization of Capacitive Field-Effect Sensors |
| title_fullStr | Portable Measurement System for the Characterization of Capacitive Field-Effect Sensors |
| title_full_unstemmed | Portable Measurement System for the Characterization of Capacitive Field-Effect Sensors |
| title_short | Portable Measurement System for the Characterization of Capacitive Field-Effect Sensors |
| title_sort | portable measurement system for the characterization of capacitive field effect sensors |
| topic | field-effect capacitor portable measurement system pH sensor penicillin biosensor |
| url | https://www.mdpi.com/1424-8220/25/9/2681 |
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