Simulation/Experiment Confrontation, an Efficient Approach for Sensitive SAW Sensors Design
Sensitivity is one of the most important parameters to put in the foreground in all sensing applications. Its increase is therefore an ongoing challenge, particularly for surface acoustic wave (SAW) sensors. Herein, finite element method (FEM) simulation using COMSOL Multiphysics software is first u...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-09-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/17/4994 |
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| author | Bilel Achour Ghada Attia Chouki Zerrouki Najla Fourati Kosai Raoof Nourdin Yaakoubi |
| author_facet | Bilel Achour Ghada Attia Chouki Zerrouki Najla Fourati Kosai Raoof Nourdin Yaakoubi |
| author_sort | Bilel Achour |
| collection | DOAJ |
| description | Sensitivity is one of the most important parameters to put in the foreground in all sensing applications. Its increase is therefore an ongoing challenge, particularly for surface acoustic wave (SAW) sensors. Herein, finite element method (FEM) simulation using COMSOL Multiphysics software is first used to simulate the physical and electrical properties of SAW delay line. Results indicate that 2D configuration permits to accurately obtain all pertinent parameters, as in 3D simulation, with very substantial time saving. A good agreement between calculation and experiment, in terms of transfer functions (S21 spectra), was also shown to evaluate the dependence of the SAW sensors sensitivity on the operating frequency; 2D simulations have been conducted on 104 MHz and 208 MHz delay lines, coated with a polyisobutylene (PIB) as sensitive layer to dichloromethane (DCM). A fourfold increase in sensitivity was obtained by doubling frequency. Both sensors were then realized and tested as chem-sensors to detect zinc ions in liquid media. 9-{[4-({[4-(9anthrylmethoxy)phenyl]sulfanyl} methyl)]methyl] anthracene (TDP-AN) was selected as the sensing layer. Results show a comparable response curves for both designed sensors, in terms of limit of detection and dissociation constants K<sub>d</sub> values. On the other hand, experimental sensitivity values were of the order of [7.0 ± 2.8] × 10<sup>8</sup> [°/M] and [16.0 ± 7.6] × 10<sup>8</sup> [°/M] for 104 MHz and 208 MHz sensors, respectively, confirming that the sensitivity increases with frequency. |
| first_indexed | 2024-03-10T16:36:19Z |
| format | Article |
| id | doaj.art-db47b69fa76c4d96bbda5beb5dab84e6 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T16:36:19Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-db47b69fa76c4d96bbda5beb5dab84e62023-11-20T12:26:24ZengMDPI AGSensors1424-82202020-09-012017499410.3390/s20174994Simulation/Experiment Confrontation, an Efficient Approach for Sensitive SAW Sensors DesignBilel Achour0Ghada Attia1Chouki Zerrouki2Najla Fourati3Kosai Raoof4Nourdin Yaakoubi5LAUM, UMR CNRS 6613, Le Mans Université, Avenue Olivier Messiaen, CEDEX 9, 72085 Le Mans, FranceCnam, SATIE, UMR CNRS 8029, 292 Rue Saint Martin, 75003 Paris, FranceCnam, SATIE, UMR CNRS 8029, 292 Rue Saint Martin, 75003 Paris, FranceCnam, SATIE, UMR CNRS 8029, 292 Rue Saint Martin, 75003 Paris, FranceLAUM, UMR CNRS 6613, Le Mans Université, Avenue Olivier Messiaen, CEDEX 9, 72085 Le Mans, FranceLAUM, UMR CNRS 6613, Le Mans Université, Avenue Olivier Messiaen, CEDEX 9, 72085 Le Mans, FranceSensitivity is one of the most important parameters to put in the foreground in all sensing applications. Its increase is therefore an ongoing challenge, particularly for surface acoustic wave (SAW) sensors. Herein, finite element method (FEM) simulation using COMSOL Multiphysics software is first used to simulate the physical and electrical properties of SAW delay line. Results indicate that 2D configuration permits to accurately obtain all pertinent parameters, as in 3D simulation, with very substantial time saving. A good agreement between calculation and experiment, in terms of transfer functions (S21 spectra), was also shown to evaluate the dependence of the SAW sensors sensitivity on the operating frequency; 2D simulations have been conducted on 104 MHz and 208 MHz delay lines, coated with a polyisobutylene (PIB) as sensitive layer to dichloromethane (DCM). A fourfold increase in sensitivity was obtained by doubling frequency. Both sensors were then realized and tested as chem-sensors to detect zinc ions in liquid media. 9-{[4-({[4-(9anthrylmethoxy)phenyl]sulfanyl} methyl)]methyl] anthracene (TDP-AN) was selected as the sensing layer. Results show a comparable response curves for both designed sensors, in terms of limit of detection and dissociation constants K<sub>d</sub> values. On the other hand, experimental sensitivity values were of the order of [7.0 ± 2.8] × 10<sup>8</sup> [°/M] and [16.0 ± 7.6] × 10<sup>8</sup> [°/M] for 104 MHz and 208 MHz sensors, respectively, confirming that the sensitivity increases with frequency.https://www.mdpi.com/1424-8220/20/17/4994finite element method (FEM) simulationpolyisobutylene (PIB)dichloromethane (DCM)anthracenezinc ionssurface acoustic wave (SAW) sensors |
| spellingShingle | Bilel Achour Ghada Attia Chouki Zerrouki Najla Fourati Kosai Raoof Nourdin Yaakoubi Simulation/Experiment Confrontation, an Efficient Approach for Sensitive SAW Sensors Design Sensors finite element method (FEM) simulation polyisobutylene (PIB) dichloromethane (DCM) anthracene zinc ions surface acoustic wave (SAW) sensors |
| title | Simulation/Experiment Confrontation, an Efficient Approach for Sensitive SAW Sensors Design |
| title_full | Simulation/Experiment Confrontation, an Efficient Approach for Sensitive SAW Sensors Design |
| title_fullStr | Simulation/Experiment Confrontation, an Efficient Approach for Sensitive SAW Sensors Design |
| title_full_unstemmed | Simulation/Experiment Confrontation, an Efficient Approach for Sensitive SAW Sensors Design |
| title_short | Simulation/Experiment Confrontation, an Efficient Approach for Sensitive SAW Sensors Design |
| title_sort | simulation experiment confrontation an efficient approach for sensitive saw sensors design |
| topic | finite element method (FEM) simulation polyisobutylene (PIB) dichloromethane (DCM) anthracene zinc ions surface acoustic wave (SAW) sensors |
| url | https://www.mdpi.com/1424-8220/20/17/4994 |
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