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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Gerhard, Reimund
University of Potsdam
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2021Space-charge electret properties of polypropylene films with transcrystalline or spherulitic structurescitations
- 2021Tuning electro-mechanical properties of EAP-based haptic actuators by adjusting layer thickness and number of stacked layerscitations
- 2021Non-linear dielectric spectroscopy for detecting and evaluating structure-property relations in a P(VDF-TrFE-CFE) relaxor-ferroelectric terpolymercitations
- 2019Depth Profile and Transport of Positive and Negative Charge in Surface (2-D) and Bulk (3-D) Nanocomposite Filmscitations
- 2018Cellular polypropylene foam films as DC voltage insulation and as piezoelectretscitations
- 2018LDPE/MgO Nanocomposite Dielectrics for Electrical-Insulation and Ferroelectret-Transducer Applications
- 2017Novel high dielectric constant hybrid elastomers as candidates for dielectric elastomer actuators
- 2017Relaxation Processes Determining the Electret Stability of High-Impact Polystyrene/Titanium-Dioxide Composite Filmscitations
- 2016Glycerol as high-permittivity liquid filler in dielectric silicone elastomerscitations
- 2014Screen printing for producing ferroelectret systems with polymer-electret films and well-defined cavitiescitations
- 2011Characterization and calibration of piezoelectric polymers in situ measurements of body vibrationscitations
- 2011Enhancement of dielectric permittivity and electromechanical response in silicone elastomers molecular grafting of organic dipoles to the macromolecular Networkcitations
- 2010Enhanced Polarization in Melt-quenched and Stretched Poly(vinylidene Fluoride-Hexafluoropropylene) Filmscitations
- 2009Template-based fluoroethylenepropylene piezoelectrets with tubular channels for transducer applicationscitations
- 2008Cellular polyethylene-naphthalate films for ferroelectret applications: foaming, inflation and stretching, assessment of electromechanically relevant structural featurescitations
- 2006Relaxation processes at the glass transition in polyamide 11: From rigidity to viscoelasticitycitations
- 2006Novel heat durable electromechanical film : processing for electromechanical and electret applications
- 2006Thermal and temporal stability of ferroelectret films made from cellular polypropylene/air composites
- 2006Elastic properties and electromechanical coupling factor of inflated polypropylene ferroelectretscitations
- 2005Modeling electro-mechanical properties of layered electrets : application of the finite-element methodcitations
Places of action
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article
Modeling electro-mechanical properties of layered electrets : application of the finite-element method
Abstract
e present calculations on the deformation of two- and three-layer electret systems. The electrical field is coupled with the stress–strain equations by means of the Maxwell stress tensor . In the simulations, two-phase systems are considered, and intrinsic relative dielectric permittivity and Young's modulus of the phases are altered. The numerically calculated electro-mechanical activity is compared to an analytical expression. Simulations are performed on two- and three-layer systems. Various parameters in the model are systematically varied and their influence on the resulting piezoelectricity is estimated. In three-layer systems with bipolar charge, the piezoelectric coefficients exhibit a strong dependence on the elastic moduli of the phases. However, with mono-polar charge, there is no significant piezoelectric effect. A two-dimensional simulation illustrated that higher piezoelectric coefficients can be obtained for non-uniform surface charges and low Poisson's ratio of phases. Irregular structures considered exhibit low piezoelectric activity compared to two-layer structures.