Effect of Electrode Shape and Flow Conditions on the Electrochemical Detection with Band Microelectrodes
In this work, we report the analysis of the electrochemical detection of electroactive species with band microelectrodes that operate under controlled convection. The study focuses on the determination of the collection efficiency of the analyte as a function of inlet flow velocity and microband geo...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-09-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/18/10/3196 |
| _version_ | 1811184742846955520 |
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| author | Maher Al Khatib Marco Bellini Rebecca Pogni Andrea Giaccherini Massimo Innocenti Francesco Vizza Alessandro Lavacchi |
| author_facet | Maher Al Khatib Marco Bellini Rebecca Pogni Andrea Giaccherini Massimo Innocenti Francesco Vizza Alessandro Lavacchi |
| author_sort | Maher Al Khatib |
| collection | DOAJ |
| description | In this work, we report the analysis of the electrochemical detection of electroactive species with band microelectrodes that operate under controlled convection. The study focuses on the determination of the collection efficiency of the analyte as a function of inlet flow velocity and microband geometry (inlaid, bumped and recessed), also providing a straightforward method for the theoretical determination of the lower detection limit. The analysis has been carried out by simulating the dimensionless mass transport with the finite element method, delivering the stationary limiting current density. Simulations have been performed on systems consisting of single and double band electrodes to investigate the trail effect on the electrochemical detection. We show that the obtained dimensionless results can be easily turned into dimensional data, providing a tool for the design of devices. The proposed method is general and can easily be extended to systems with different geometry. |
| first_indexed | 2024-04-11T13:17:35Z |
| format | Article |
| id | doaj.art-f0bf0056a4cc4678a538e47802cb5655 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T13:17:35Z |
| publishDate | 2018-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-f0bf0056a4cc4678a538e47802cb56552022-12-22T04:22:20ZengMDPI AGSensors1424-82202018-09-011810319610.3390/s18103196s18103196Effect of Electrode Shape and Flow Conditions on the Electrochemical Detection with Band MicroelectrodesMaher Al Khatib0Marco Bellini1Rebecca Pogni2Andrea Giaccherini3Massimo Innocenti4Francesco Vizza5Alessandro Lavacchi6Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, ItalyInstitute for the Chemistry of Organometallic Compounds, Italian National Council for Research, 50019 Florence, ItalyDepartment of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, ItalyDepartment of Chemistry, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (Florence), ItalyDepartment of Chemistry, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (Florence), ItalyInstitute for the Chemistry of Organometallic Compounds, Italian National Council for Research, 50019 Florence, ItalyInstitute for the Chemistry of Organometallic Compounds, Italian National Council for Research, 50019 Florence, ItalyIn this work, we report the analysis of the electrochemical detection of electroactive species with band microelectrodes that operate under controlled convection. The study focuses on the determination of the collection efficiency of the analyte as a function of inlet flow velocity and microband geometry (inlaid, bumped and recessed), also providing a straightforward method for the theoretical determination of the lower detection limit. The analysis has been carried out by simulating the dimensionless mass transport with the finite element method, delivering the stationary limiting current density. Simulations have been performed on systems consisting of single and double band electrodes to investigate the trail effect on the electrochemical detection. We show that the obtained dimensionless results can be easily turned into dimensional data, providing a tool for the design of devices. The proposed method is general and can easily be extended to systems with different geometry.http://www.mdpi.com/1424-8220/18/10/3196electrochemical sensorsmicroelectrodesmass transportdiffusion convection |
| spellingShingle | Maher Al Khatib Marco Bellini Rebecca Pogni Andrea Giaccherini Massimo Innocenti Francesco Vizza Alessandro Lavacchi Effect of Electrode Shape and Flow Conditions on the Electrochemical Detection with Band Microelectrodes Sensors electrochemical sensors microelectrodes mass transport diffusion convection |
| title | Effect of Electrode Shape and Flow Conditions on the Electrochemical Detection with Band Microelectrodes |
| title_full | Effect of Electrode Shape and Flow Conditions on the Electrochemical Detection with Band Microelectrodes |
| title_fullStr | Effect of Electrode Shape and Flow Conditions on the Electrochemical Detection with Band Microelectrodes |
| title_full_unstemmed | Effect of Electrode Shape and Flow Conditions on the Electrochemical Detection with Band Microelectrodes |
| title_short | Effect of Electrode Shape and Flow Conditions on the Electrochemical Detection with Band Microelectrodes |
| title_sort | effect of electrode shape and flow conditions on the electrochemical detection with band microelectrodes |
| topic | electrochemical sensors microelectrodes mass transport diffusion convection |
| url | http://www.mdpi.com/1424-8220/18/10/3196 |
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