A Portable Device for I–V and Arrhenius Plots to Characterize Chemoresistive Gas Sensors: Test on SnO<sub>2</sub>-Based Sensors
Chemoresistive nanostructured gas sensors are employed in many diverse applications in the medical, industrial, environmental, etc. fields; therefore, it is crucial to have a device that is able to quickly calibrate and characterize them. To this aim, a portable, user-friendly device designed to eas...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/18/2549 |
| _version_ | 1797578410365550592 |
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| author | Michele Astolfi Giulia Zonta Sandro Gherardi Cesare Malagù Donato Vincenzi Giorgio Rispoli |
| author_facet | Michele Astolfi Giulia Zonta Sandro Gherardi Cesare Malagù Donato Vincenzi Giorgio Rispoli |
| author_sort | Michele Astolfi |
| collection | DOAJ |
| description | Chemoresistive nanostructured gas sensors are employed in many diverse applications in the medical, industrial, environmental, etc. fields; therefore, it is crucial to have a device that is able to quickly calibrate and characterize them. To this aim, a portable, user-friendly device designed to easily calibrate a sensor in laboratory and/or on field is introduced here. The device comprises a small hermetically sealed chamber (containing the sensor socket and a temperature/humidity sensor), a pneumatic system, and a custom electronics controlled by a Raspberry Pi 4 developing board, running a custom software (Version 1.0) whose user interface is accessed via a multitouch-screen. This device automatically characterizes the sensor heater in order to precisely set the desired working temperature, it acquires and plots the sensor current-to-voltage and Arrhenius relationships on the touch screen, and it can record the sensor responses to different gases and environments. These tests were performed in dry air on two representative sensors based on widely used SnO<sub>2</sub> material. The device demonstrated the independence of the Arrhenius plot from the film applied voltage and the linearity of the I–Vs, which resulted from the voltage step length (1–30 min) and temperature (200–550 °C). |
| first_indexed | 2024-03-10T22:22:28Z |
| format | Article |
| id | doaj.art-aa5ee1740245447db329ae931a0bf752 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T22:22:28Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-aa5ee1740245447db329ae931a0bf7522023-11-19T12:14:32ZengMDPI AGNanomaterials2079-49912023-09-011318254910.3390/nano13182549A Portable Device for I–V and Arrhenius Plots to Characterize Chemoresistive Gas Sensors: Test on SnO<sub>2</sub>-Based SensorsMichele Astolfi0Giulia Zonta1Sandro Gherardi2Cesare Malagù3Donato Vincenzi4Giorgio Rispoli5Department of Physics and Earth Science, University of Ferrara, 44122 Ferrara, ItalyDepartment of Physics and Earth Science, University of Ferrara, 44122 Ferrara, ItalySCENT S.r.l., 44124 Ferrara, ItalyDepartment of Physics and Earth Science, University of Ferrara, 44122 Ferrara, ItalyDepartment of Physics and Earth Science, University of Ferrara, 44122 Ferrara, ItalyDepartment of Neurosciences and Rehabilitation, University of Ferrara, 44121 Ferrara, ItalyChemoresistive nanostructured gas sensors are employed in many diverse applications in the medical, industrial, environmental, etc. fields; therefore, it is crucial to have a device that is able to quickly calibrate and characterize them. To this aim, a portable, user-friendly device designed to easily calibrate a sensor in laboratory and/or on field is introduced here. The device comprises a small hermetically sealed chamber (containing the sensor socket and a temperature/humidity sensor), a pneumatic system, and a custom electronics controlled by a Raspberry Pi 4 developing board, running a custom software (Version 1.0) whose user interface is accessed via a multitouch-screen. This device automatically characterizes the sensor heater in order to precisely set the desired working temperature, it acquires and plots the sensor current-to-voltage and Arrhenius relationships on the touch screen, and it can record the sensor responses to different gases and environments. These tests were performed in dry air on two representative sensors based on widely used SnO<sub>2</sub> material. The device demonstrated the independence of the Arrhenius plot from the film applied voltage and the linearity of the I–Vs, which resulted from the voltage step length (1–30 min) and temperature (200–550 °C).https://www.mdpi.com/2079-4991/13/18/2549gas sensorchemoresistivitysensor devicecurrent-voltage characteristicsArrhenius plotmetal-oxide |
| spellingShingle | Michele Astolfi Giulia Zonta Sandro Gherardi Cesare Malagù Donato Vincenzi Giorgio Rispoli A Portable Device for I–V and Arrhenius Plots to Characterize Chemoresistive Gas Sensors: Test on SnO<sub>2</sub>-Based Sensors Nanomaterials gas sensor chemoresistivity sensor device current-voltage characteristics Arrhenius plot metal-oxide |
| title | A Portable Device for I–V and Arrhenius Plots to Characterize Chemoresistive Gas Sensors: Test on SnO<sub>2</sub>-Based Sensors |
| title_full | A Portable Device for I–V and Arrhenius Plots to Characterize Chemoresistive Gas Sensors: Test on SnO<sub>2</sub>-Based Sensors |
| title_fullStr | A Portable Device for I–V and Arrhenius Plots to Characterize Chemoresistive Gas Sensors: Test on SnO<sub>2</sub>-Based Sensors |
| title_full_unstemmed | A Portable Device for I–V and Arrhenius Plots to Characterize Chemoresistive Gas Sensors: Test on SnO<sub>2</sub>-Based Sensors |
| title_short | A Portable Device for I–V and Arrhenius Plots to Characterize Chemoresistive Gas Sensors: Test on SnO<sub>2</sub>-Based Sensors |
| title_sort | portable device for i v and arrhenius plots to characterize chemoresistive gas sensors test on sno sub 2 sub based sensors |
| topic | gas sensor chemoresistivity sensor device current-voltage characteristics Arrhenius plot metal-oxide |
| url | https://www.mdpi.com/2079-4991/13/18/2549 |
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