Flexible Pressure Sensors: Modeling and Experimental Characterization
Flexible capacitive pressure sensors fabricated with nanocomposites were experimentally characterized and results compared with simulations from analytical modeling. Unlike traditional diaphragm silicon pressure sensors, the flexible nanocomposite sensors present a linear response over a large press...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Elsevier
2014
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| Online Access: | http://hdl.handle.net/1721.1/91543 https://orcid.org/0000-0003-3530-5819 |
| _version_ | 1811069506953412608 |
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| author | Viana, J.C. Pontes, A.J. Rocha, L.A. Guzman de Villoria, Roberto Wardle, Brian L. Sepulveda, A.T. |
| author2 | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics |
| author_facet | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Viana, J.C. Pontes, A.J. Rocha, L.A. Guzman de Villoria, Roberto Wardle, Brian L. Sepulveda, A.T. |
| author_sort | Viana, J.C. |
| collection | MIT |
| description | Flexible capacitive pressure sensors fabricated with nanocomposites were experimentally characterized and results compared with simulations from analytical modeling. Unlike traditional diaphragm silicon pressure sensors, the flexible nanocomposite sensors present a linear response over a large pressure range due to the changes in the volume of the dielectric that cause the pressure inside the dielectric cavity to change. Several devices with different geometries were used and the model results compare well with the experimental data. Sensitivities ranging from 2.5-20 fF/kPa were obtained and the devices dynamic response show a dual behavior, i.e., response time of the sensor during a pressure decreasing step is lower than for a pressure increasing step. This comportment is explained by the viscoelastic behavior of the PDMS-based nanocomposites used for fabrication of the capacitive sensor electrodes. |
| first_indexed | 2024-09-23T08:11:32Z |
| format | Article |
| id | mit-1721.1/91543 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:11:32Z |
| publishDate | 2014 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/915432022-09-30T08:10:32Z Flexible Pressure Sensors: Modeling and Experimental Characterization Viana, J.C. Pontes, A.J. Rocha, L.A. Guzman de Villoria, Roberto Wardle, Brian L. Sepulveda, A.T. Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Guzman de Villoria, Roberto Wardle, Brian L. Flexible capacitive pressure sensors fabricated with nanocomposites were experimentally characterized and results compared with simulations from analytical modeling. Unlike traditional diaphragm silicon pressure sensors, the flexible nanocomposite sensors present a linear response over a large pressure range due to the changes in the volume of the dielectric that cause the pressure inside the dielectric cavity to change. Several devices with different geometries were used and the model results compare well with the experimental data. Sensitivities ranging from 2.5-20 fF/kPa were obtained and the devices dynamic response show a dual behavior, i.e., response time of the sensor during a pressure decreasing step is lower than for a pressure increasing step. This comportment is explained by the viscoelastic behavior of the PDMS-based nanocomposites used for fabrication of the capacitive sensor electrodes. Fundação para a Ciência e a Tecnologia 2014-11-13T18:28:05Z 2014-11-13T18:28:05Z 2012-11 Article http://purl.org/eprint/type/JournalArticle 18777058 http://hdl.handle.net/1721.1/91543 Sepulveda, A.T., R. Guzman De Villoria, J.C. Viana, A.J. Pontes, B.L. Wardle, and L.A. Rocha. “Flexible Pressure Sensors: Modeling and Experimental Characterization.” Procedia Engineering 47 (January 2012): 1177–1180. https://orcid.org/0000-0003-3530-5819 en_US http://dx.doi.org/10.1016/j.proeng.2012.09.361 Procedia Engineering Creative Commons Attribution http://creativecommons.org/licenses/by-nc-nd/3.0/ application/pdf Elsevier Elsevier |
| spellingShingle | Viana, J.C. Pontes, A.J. Rocha, L.A. Guzman de Villoria, Roberto Wardle, Brian L. Sepulveda, A.T. Flexible Pressure Sensors: Modeling and Experimental Characterization |
| title | Flexible Pressure Sensors: Modeling and Experimental Characterization |
| title_full | Flexible Pressure Sensors: Modeling and Experimental Characterization |
| title_fullStr | Flexible Pressure Sensors: Modeling and Experimental Characterization |
| title_full_unstemmed | Flexible Pressure Sensors: Modeling and Experimental Characterization |
| title_short | Flexible Pressure Sensors: Modeling and Experimental Characterization |
| title_sort | flexible pressure sensors modeling and experimental characterization |
| url | http://hdl.handle.net/1721.1/91543 https://orcid.org/0000-0003-3530-5819 |
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