| People | Locations | Statistics |
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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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Tuncer, Enis
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (39/39 displayed)
- 2023INTEGRATED HIGH VOLTAGE ELECTRONIC DEVICE WITH HIGH RELATIVE PERMITTIVITY LAYERS
- 2018Anti-soiling and highly transparent coatings with multi-scale featurescitations
- 2017Electrical properties of polyetherimide thin films: Non-parametric dielectric response analysis with distribution of relaxation times.citations
- 2017The glass transition and DC conductivity in highly filled compositescitations
- 2016Reliability of High-Voltage Molding Compounds: Particle Size, Curing Time, Sample Thickness, and Voltage Impact on Polarizationcitations
- 2012Effect of polymer–nanoparticle interactions on the glass transition dynamics and the conductivity mechanism in polyurethane titanium dioxide nanocompositescitations
- 2012Colloidal synthesis of BaF2 nanoparticles and their application as fillers in polymer nanocompositescitations
- 2012Spectral density representation of dielectric mixturescitations
- 2012Epoxy nanodielectrics fabricated with in situ and ex situ techniquescitations
- 2011Thermal stability of HfO2 nanotube arrayscitations
- 2011Spectral density analysis of the optical properties of Ni-Al 2O 3 nano-composite filmscitations
- 2010Geometrical Description in Binary Composites and Spectral Density Representationcitations
- 2010ELECTRICAL AND MECHANICAL PROPERTIES OF TITANIUM DIOXIDE NANOPARTICLE FILLED EPOXY RESIN COMPOSITEScitations
- 2010Properties of a nanodielectric cryogenic resincitations
- 2010Electrical properties of a thermoplastic polyurethane filled with titanium dioxide nanoparticles
- 2010DIELECTRIC PROPERTIES OF VARIOUS NANOCOMPOSITE MATERIALS
- 2010VERY LOW FREQUENCY BREAKDOWN PROPERTIES OF ELECTRICAL INSULATION MATERIALS AT CRYOGENIC TEMPERATUREScitations
- 2010Novel numerical method for acquiring a geometrical description of nanodielectricscitations
- 2010Breakdown properties of epoxy nanodielectriccitations
- 2010Physical properties of epoxy resin/titanium dioxide nanocompositescitations
- 2009Polyamide 66 as a cryogenic dielectriccitations
- 2009Nanocomposite Insulation for HTS Applicationscitations
- 2009Very low frequency breakdown strengths of electrical insulation materials at cryogenic temperaturescitations
- 2009Electrical Insulation Characteristics of Glass Fiber Reinforced Resinscitations
- 2009Electrical properties of a polymeric nanocomposite with in-situ synthesized nanoparticlescitations
- 2008Nanodielectric system for cryogenic applications: Barium titanate filled polyvinyl alcoholcitations
- 2008Cobalt iron-oxide nanoparticle modified poly(methyl methacrylate) nanodielectricscitations
- 2007Enhancement of dielectric strength in nanocompositescitations
- 2007Dielectric properties of polyvinyl alcohol filled with nanometer size barium titanate particlescitations
- 2007Breakdown and Partial Discharge Measurements of Some Commonly Used Dielectric Materials in Liquid Nitrogen for HTS Applicationscitations
- 2006Electrical properties of epoxy resin based nano-compositescitations
- 2006Application of the spectral density function method to a composite systemcitations
- 2006Elastic properties and electromechanical coupling factor of inflated polypropylene ferroelectretscitations
- 2005Extracting the spectral density function of a binary composite without a priori assumptionscitations
- 2005Modeling electro-mechanical properties of layered electrets : application of the finite-element methodcitations
- 2004Signs of low frequency dispersions in disordered binary dielectric mixtures (fifty-fifty)citations
- 2002Electrical properties of 4×4 binary dielectric mixturescitations
- 2001Dielectric relaxation in dielectric mixtures: Application of the finite element method and its comparison with dielectric mixture formulascitations
- 2001How round is round? On accuracy in complex dielectric permittivity calculations: A finite-size scaling approach
Places of action
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document
Elastic properties and electromechanical coupling factor of inflated polypropylene ferroelectrets
Abstract
Closed-cell polymer-foam electrets with internal bipolar charge exhibit strong longitudinal piezoelectricity. The size and the shape of their internal voids can be controlled by means of an inflation process that consists of a high-pressure treatment followed by a heat-setting procedure. Experimental data reveal a maximum of the piezoelectric coefficient and of the electromechanical coupling factor as functions of the polymer-foam density. These and related experimental results are discussed within a simplified model for polymer foams. The piezoelectric d33 coefficient and the respective coupling factor k33 are calculated by means of a series-connection model for cellular polymers. In the model, the piezoelectric coefficient and the coupling factor can be expressed in terms of the charge density on the respective void surface, the relative dielectric permittivity, the effective Young's modulus and the relative density of the foam. The effective Young's modulus is in turn determined by means of a truss-like mechanical model of the polymer foam. The model yields qualitative agreement with the experimentally observed data.