Double‐Sided Conformable Piezoelectric Force Sensor with Enhanced Performance and Bending Correction
Abstract Flexible piezoelectric devices have gained considerable interest due to their potential for new applications, particularly in wearable technology. However, a significant challenge remains in measuring low forces on nonplanar and deformable surfaces. Indeed, conformability on complex surface...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2025-04-01
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| Series: | Advanced Electronic Materials |
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| Online Access: | https://doi.org/10.1002/aelm.202400456 |
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| author | Joseph Faudou Mohammed Benwadih Abdelkader Aliane Christine Revenant Daniel Grinberg Minh‐Quyen Le Pierre‐Jean Cottinet |
| author_facet | Joseph Faudou Mohammed Benwadih Abdelkader Aliane Christine Revenant Daniel Grinberg Minh‐Quyen Le Pierre‐Jean Cottinet |
| author_sort | Joseph Faudou |
| collection | DOAJ |
| description | Abstract Flexible piezoelectric devices have gained considerable interest due to their potential for new applications, particularly in wearable technology. However, a significant challenge remains in measuring low forces on nonplanar and deformable surfaces. Indeed, conformability on complex surfaces induces bending stresses in the piezoelectric sensors, interfering with the measurement of compressive force. Yet such measurements can be valuable, especially in medical applications that involve assessing forces on soft tissues. This study presents an innovative highly sensitive conformable sensor based on a thin film of P(VDF‐TrFE) copolymer. The selection of the substrate is essential for ensuring the device's conformability, but it is also demonstrated that it can provide a substantial improvement in performance if its Young's modulus is lower than that of the active polymer. The effective piezoelectric charge coefficient d33eff of a sensor on TPU substrate is measured equal to −340 pC.N−1, representing a tenfold increase in the theoretical compression sensitivity of P(VDF‐TrFE). Additionally, a double‐sided structure to eliminate the contribution of bending in the piezoelectric signal and tackle the challenge of conformability on complex surfaces is developed. Overall, the proposed device shows promising results for measuring low forces applied to soft biological tissues such as skin or heart valve leaflets. |
| format | Article |
| id | doaj-art-c4a2b06fae5642e3913128d281c7caa6 |
| institution | OA Journals |
| issn | 2199-160X |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Electronic Materials |
| spelling | doaj-art-c4a2b06fae5642e3913128d281c7caa62025-08-20T02:12:40ZengWiley-VCHAdvanced Electronic Materials2199-160X2025-04-01115n/an/a10.1002/aelm.202400456Double‐Sided Conformable Piezoelectric Force Sensor with Enhanced Performance and Bending CorrectionJoseph Faudou0Mohammed Benwadih1Abdelkader Aliane2Christine Revenant3Daniel Grinberg4Minh‐Quyen Le5Pierre‐Jean Cottinet6Univ. Grenoble Alpes, CEA, LITEN Grenoble 38000 FranceUniv. Grenoble Alpes, CEA, LITEN Grenoble 38000 FranceUniv. Grenoble Alpes, CEA, LETI Grenoble 38000 FranceUniv. Grenoble Alpes, CEA, IRIG Grenoble 38000 FranceDepartment of Cardiac Surgery “Louis Pradel” Cardiologic Hospital Bron 69500 FranceLGEF Laboratory, INSA Lyon, UR682 Villeurbanne 69621 FranceLGEF Laboratory, INSA Lyon, UR682 Villeurbanne 69621 FranceAbstract Flexible piezoelectric devices have gained considerable interest due to their potential for new applications, particularly in wearable technology. However, a significant challenge remains in measuring low forces on nonplanar and deformable surfaces. Indeed, conformability on complex surfaces induces bending stresses in the piezoelectric sensors, interfering with the measurement of compressive force. Yet such measurements can be valuable, especially in medical applications that involve assessing forces on soft tissues. This study presents an innovative highly sensitive conformable sensor based on a thin film of P(VDF‐TrFE) copolymer. The selection of the substrate is essential for ensuring the device's conformability, but it is also demonstrated that it can provide a substantial improvement in performance if its Young's modulus is lower than that of the active polymer. The effective piezoelectric charge coefficient d33eff of a sensor on TPU substrate is measured equal to −340 pC.N−1, representing a tenfold increase in the theoretical compression sensitivity of P(VDF‐TrFE). Additionally, a double‐sided structure to eliminate the contribution of bending in the piezoelectric signal and tackle the challenge of conformability on complex surfaces is developed. Overall, the proposed device shows promising results for measuring low forces applied to soft biological tissues such as skin or heart valve leaflets.https://doi.org/10.1002/aelm.202400456bending effectconformable sensorsferroelectric polymermedical applicationspiezoelectric bimorphs |
| spellingShingle | Joseph Faudou Mohammed Benwadih Abdelkader Aliane Christine Revenant Daniel Grinberg Minh‐Quyen Le Pierre‐Jean Cottinet Double‐Sided Conformable Piezoelectric Force Sensor with Enhanced Performance and Bending Correction Advanced Electronic Materials bending effect conformable sensors ferroelectric polymer medical applications piezoelectric bimorphs |
| title | Double‐Sided Conformable Piezoelectric Force Sensor with Enhanced Performance and Bending Correction |
| title_full | Double‐Sided Conformable Piezoelectric Force Sensor with Enhanced Performance and Bending Correction |
| title_fullStr | Double‐Sided Conformable Piezoelectric Force Sensor with Enhanced Performance and Bending Correction |
| title_full_unstemmed | Double‐Sided Conformable Piezoelectric Force Sensor with Enhanced Performance and Bending Correction |
| title_short | Double‐Sided Conformable Piezoelectric Force Sensor with Enhanced Performance and Bending Correction |
| title_sort | double sided conformable piezoelectric force sensor with enhanced performance and bending correction |
| topic | bending effect conformable sensors ferroelectric polymer medical applications piezoelectric bimorphs |
| url | https://doi.org/10.1002/aelm.202400456 |
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