A Multidisciplinary Approach toward CMOS Capacitive Sensor Array for Droplet Analysis
This paper introduces an innovative method for the analysis of alcohol–water droplets on a CMOS capacitive sensor, leveraging the controlled thermal behavior of the droplets. Using this sensing method, the capacitive sensor measures the total time of evaporation (ToE), which can be influenced by the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/15/2/232 |
| _version_ | 1797297495641948160 |
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| author | Hamed Osouli Tabrizi Saghi Forouhi Tayebeh Azadmousavi Ebrahim Ghafar-Zadeh |
| author_facet | Hamed Osouli Tabrizi Saghi Forouhi Tayebeh Azadmousavi Ebrahim Ghafar-Zadeh |
| author_sort | Hamed Osouli Tabrizi |
| collection | DOAJ |
| description | This paper introduces an innovative method for the analysis of alcohol–water droplets on a CMOS capacitive sensor, leveraging the controlled thermal behavior of the droplets. Using this sensing method, the capacitive sensor measures the total time of evaporation (ToE), which can be influenced by the droplet volume, temperature, and chemical composition. We explored this sensing method by introducing binary mixtures of water and ethanol or methanol across a range of concentrations (0–100%, with 10% increments). The experimental results indicate that while the capacitive sensor is effective in measuring both the total ToE and dielectric properties, a higher dynamic range and resolution are observed in the former. Additionally, an array of sensing electrodes successfully monitors the droplet–sensor surface interaction. However practical considerations such as the creation of parasitic capacitance due to mismatch, arise from the large sensing area in the proposed capacitive sensors and other similar devices. In this paper, we discuss this non-ideality and propose a solution. Also, this paper showcases the benefits of utilizing a CMOS capacitive sensing method for accurately measuring ToE. |
| first_indexed | 2024-03-07T22:21:10Z |
| format | Article |
| id | doaj.art-adb94079ade540bbb9878436cdb9bc5f |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-07T22:21:10Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-adb94079ade540bbb9878436cdb9bc5f2024-02-23T15:27:42ZengMDPI AGMicromachines2072-666X2024-02-0115223210.3390/mi15020232A Multidisciplinary Approach toward CMOS Capacitive Sensor Array for Droplet AnalysisHamed Osouli Tabrizi0Saghi Forouhi1Tayebeh Azadmousavi2Ebrahim Ghafar-Zadeh3Biologically Inspired Sensors and Actuators, Department of Electrical Engineering and Computer Science, Lassonde School of Engineering, York University, Toronto, ON M3J 1P3, CanadaBiologically Inspired Sensors and Actuators, Department of Electrical Engineering and Computer Science, Lassonde School of Engineering, York University, Toronto, ON M3J 1P3, CanadaDepartment of Electrical Engineering, University of Bonab, Bonab 5551395133, IranBiologically Inspired Sensors and Actuators, Department of Electrical Engineering and Computer Science, Lassonde School of Engineering, York University, Toronto, ON M3J 1P3, CanadaThis paper introduces an innovative method for the analysis of alcohol–water droplets on a CMOS capacitive sensor, leveraging the controlled thermal behavior of the droplets. Using this sensing method, the capacitive sensor measures the total time of evaporation (ToE), which can be influenced by the droplet volume, temperature, and chemical composition. We explored this sensing method by introducing binary mixtures of water and ethanol or methanol across a range of concentrations (0–100%, with 10% increments). The experimental results indicate that while the capacitive sensor is effective in measuring both the total ToE and dielectric properties, a higher dynamic range and resolution are observed in the former. Additionally, an array of sensing electrodes successfully monitors the droplet–sensor surface interaction. However practical considerations such as the creation of parasitic capacitance due to mismatch, arise from the large sensing area in the proposed capacitive sensors and other similar devices. In this paper, we discuss this non-ideality and propose a solution. Also, this paper showcases the benefits of utilizing a CMOS capacitive sensing method for accurately measuring ToE.https://www.mdpi.com/2072-666X/15/2/232CMOScapacitive sensordroplet analysislife science applicationstime of evaporation |
| spellingShingle | Hamed Osouli Tabrizi Saghi Forouhi Tayebeh Azadmousavi Ebrahim Ghafar-Zadeh A Multidisciplinary Approach toward CMOS Capacitive Sensor Array for Droplet Analysis Micromachines CMOS capacitive sensor droplet analysis life science applications time of evaporation |
| title | A Multidisciplinary Approach toward CMOS Capacitive Sensor Array for Droplet Analysis |
| title_full | A Multidisciplinary Approach toward CMOS Capacitive Sensor Array for Droplet Analysis |
| title_fullStr | A Multidisciplinary Approach toward CMOS Capacitive Sensor Array for Droplet Analysis |
| title_full_unstemmed | A Multidisciplinary Approach toward CMOS Capacitive Sensor Array for Droplet Analysis |
| title_short | A Multidisciplinary Approach toward CMOS Capacitive Sensor Array for Droplet Analysis |
| title_sort | multidisciplinary approach toward cmos capacitive sensor array for droplet analysis |
| topic | CMOS capacitive sensor droplet analysis life science applications time of evaporation |
| url | https://www.mdpi.com/2072-666X/15/2/232 |
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