| 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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Fritze, Holger
Clausthal University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Acoustic Loss in LiNb1−xTaxO3 at Temperatures up to 900 °C
- 2024Acoustic loss in LiNb1-xTaxO3 at temperatures up to 900 °C
- 2023Analysis of defect mechanisms in nonstoichiometric ceria–zirconia by the microwave cavity perturbation methodcitations
- 2023Chemical expansion of CeO2−δ and Ce0.8Zr0.2O2−δ thin films determined by laser Doppler vibrometry at high temperatures and different oxygen partial pressurescitations
- 2022Assembly and interconnection technology for high-temperature bulk acoustic wave resonatorscitations
- 2022In situ analysis of hydration and ionic conductivity of sulfonated poly(ether ether ketone) thin films using an interdigitated electrode array and a nanobalancecitations
- 2022Impact of electrode conductivity on mass sensitivity of piezoelectric resonators at high temperaturescitations
- 2021Linking the Electrical Conductivity and Non-Stoichiometry of Thin Film Ce1−xZrxO2−δ by a Resonant Nanobalance Approachcitations
- 2021Linking the electrical conductivity and non-stoichiometry of thin film Ce1−xZrxO2−δ by a resonant nanobalance approachcitations
- 2020High-temperature stable piezoelectric transducers using epitaxially grown electrodescitations
- 2020Determination of the Dielectric Properties of Storage Materials for Exhaust Gas Aftertreatment Using the Microwave Cavity Perturbation Methodcitations
- 2019Carbon pair defects in aluminum nitridecitations
- 2019Electromechanical losses in carbon- and oxygen-containing bulk AlN single crystals
- 2018Oxygen transport in epitaxial SrTiO3/SrTi1 − xFexO3 multilayer stackscitations
- 2018Thin-film nano-thermogravimetry applied to praseodymium-cerium oxide films at high temperaturescitations
- 2017Oxygen transport in epitaxial SrTiO3/SrTi1xFexO3 multilayer stackscitations
- 2017Oxygen transport in epitaxial SrTiO3/SrTi1 − xFexO3 multilayer stackscitations
- 2017Oxygen transport in epitaxial SrTiO3/SrTi1-xFexO3 multilayer stackscitations
- 2016Preparation and characterization of c-LiMn2O4 thin films prepared by pulsed laser deposition for lithium-ion batteriescitations
Places of action
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article
Determination of the Dielectric Properties of Storage Materials for Exhaust Gas Aftertreatment Using the Microwave Cavity Perturbation Method
Abstract
<jats:p>Recently, a laboratory setup for microwave-based characterization of powder samples at elevated temperatures and different gas atmospheres was presented. The setup is particularly interesting for operando investigations on typical materials for exhaust gas aftertreatment. By using the microwave cavity perturbation method, where the powder is placed inside a cavity resonator, the change of the resonant properties provides information about changes in the dielectric properties of the sample. However, determining the exact complex permittivity of the powder samples is not simple. Up to now, a simplified microwave cavity perturbation theory had been applied to estimate the bulk properties of the powders. In this study, an extended approach is presented which allows to determine the dielectric properties of the powder materials more correctly. It accounts for the electric field distribution in the resonator, the depolarization of the sample and the effect of the powder filling. The individual method combines findings from simulations and recognized analytical approaches and can be used for investigations on a wide range of materials and sample geometries. This work provides a more accurate evaluation of the dielectric powder properties and has the potential to enhance the understanding of the microwave behavior of storage materials for exhaust gas aftertreatment, especially with regard to the application of microwave-based catalyst state diagnosis.</jats:p>