Publicação
Flexoionic effect on ionic liquid based polymer composites for bending and pressure sensing applications
| Resumo: | Due to their ionic composition, adaptability, and responsiveness to different stimuli, ionic liquids (ILs) are among the most suitable systems to develop smart stimuli-responsive materials, to be applied as sensors and actuators, in particular when incorporated into a polymer matrix, with improved processability and integration into devices. In the present work, films based on the IL 1-butyl-3-methylimidazolium tetrachloroferrate ([Bmim][FeCl4]) incorporated into a poly(vinylidene fluoride) (PVDF) matrix with different concentrations (5, 10, and 20 wt.%) are prepared by solvent casting. Samples are used for the fabrication by doctor blade and screen printing of a fully printed flexoelectric device suitable for bending and pressure monitoring. The highest sensing response is observed for the composites incorporating 20 wt.% IL content, leading to a bending angle and pressure sensitivity of 7.29 µV/° and 0.7 µV kPa−1, respectively. The technological potential of the developed materials and their flexoionic response, combined with their processability by printing techniques, has been demonstrated in a finger movement monitoring system, opening the possibility of application in areas including wearables and robotics. |
|---|---|
| Autores principais: | Fernandes, Liliana Sofia Correia |
| Outros Autores: | Pereira, Nelson Miguel Macedo Silva; Perinka, Nikola; Botelho, Gabriela; Correia, Daniela M.; Lanceros-Mendez, S. |
| Assunto: | flexoionic ionic liquids printable electronics sensors flexoionic |
| Ano: | 2025 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | Due to their ionic composition, adaptability, and responsiveness to different stimuli, ionic liquids (ILs) are among the most suitable systems to develop smart stimuli-responsive materials, to be applied as sensors and actuators, in particular when incorporated into a polymer matrix, with improved processability and integration into devices. In the present work, films based on the IL 1-butyl-3-methylimidazolium tetrachloroferrate ([Bmim][FeCl4]) incorporated into a poly(vinylidene fluoride) (PVDF) matrix with different concentrations (5, 10, and 20 wt.%) are prepared by solvent casting. Samples are used for the fabrication by doctor blade and screen printing of a fully printed flexoelectric device suitable for bending and pressure monitoring. The highest sensing response is observed for the composites incorporating 20 wt.% IL content, leading to a bending angle and pressure sensitivity of 7.29 µV/° and 0.7 µV kPa−1, respectively. The technological potential of the developed materials and their flexoionic response, combined with their processability by printing techniques, has been demonstrated in a finger movement monitoring system, opening the possibility of application in areas including wearables and robotics. |
|---|
Atividades financiadas
Carregando projetos financiados...