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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Bauer, F. Capsal, J.F. Larcher, Q. Domingues Dos Santos, F. |
| Copyright Year | 2011 |
| Description | Author affiliation: Piezotech SAS, 9, rue de Colmar, Hésingue, France (Bauer, F.; Capsal, J.F.; Larcher, Q.; Domingues Dos Santos, F.) |
| Abstract | It has been found that by introducing defects into the P(VDF-TrFE) copolymers, it is possible to convert the polymer from a normal ferroelectric to a relaxor ferroelectric. A new class of ferroelectric polymers, i.e., the terpolymers of P(VDF-TrFE-CFE) or of P(VDF-TrFE-CTFE), was developed from the normal ferroelectric PVDF-TrFE polymer by employing proper defect modifications which eliminate detrimental effects associated with a normal first order F-P transition while maintaining high material responses. Relevant studies show that this class of electroactive polymers offers unique properties in comparison with other ferroelectric polymers. The syntheses of these relaxor ferroelectric polymers have been done by a combination of the suspension polymerization process and an oxygen-activated initiator at Piezotech SAS (Patent application). Films from cast solution can be made in different length and thicknesses. Stretching of these films increases the performance as well as the mechanical properties. These relaxor-ferroelectric terpolymers P(VDF-TrFE-CFE), P(VDF-TrFE-CTFE) are multifunctional i.e. electrostrictive material (actuators), dielectric for electric energy storage. The terpolymer exhibits high electrostrictive strain (>7%) with relatively high modulus (>0.4GPa) and high permittivity value (ε∼60). Examples of device applications (unimorphs, multifocal lens…) are presented and described. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 1110351 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781457711626 |
| e-ISBN | 9781457711633 |
| e-ISBN | 9781457711619 |
| DOI | 10.1109/ISAF.2011.6014109 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-07-24 |
| Publisher Place | Canada |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Frequency measurement Materials Annealing Lenses Acceleration Atmosphere Optical device Relaxor-ferroelectric terpolymer P(VDF-TrFE-CFE) P(VDF- TrFE-CTFE) Terpolymer Relaxor properties Actuators |
| Content Type | Text |
| Resource Type | Article |
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