| 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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Jakobsen, Bo
Roskilde University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024RUSC (Roskilde University Shear Code)
- 2023Solvothermal vapor annealing setup for thin film treatment:A compact design with in situ solvent vapor concentration probecitations
- 2023Solvothermal vapor annealing setup for thin film treatmentcitations
- 2023Thin film and bulk morphology of PI-PS-PMMA miktoarm star terpolymers with both weakly and strongly segregated arm pairs
- 2022Piezoelectric shear rheometrycitations
- 2018High-pressure cell for simultaneous dielectric and neutron spectroscopycitations
- 2015Communication: High pressure specific heat spectroscopy reveals simple relaxation behavior of glass forming molecular liquidcitations
- 2014High-Resolution Reciprocal Space Mapping for Characterizing Deformation Structurescitations
- 2007Investigation of the deformation structure in an aluminium magnesium alloy by high angular resolution three-dimensional X-ray diffractioncitations
- 2007Direct determination of elastic strains and dislocation densities in individual subgrains in deformation structurescitations
- 2006In-situ studies of bulk deformation structures: Static properties under load and dynamics during deformation
- 2005Dielectric and shear mechanical relaxations in glass-forming liquidscitations
Places of action
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article
Piezoelectric shear rheometry
Abstract
The piezoelectric shear gauge (PSG) [Christensen and Olsen, Rev. Sci. Instrum. 66, 5019 (1995)] is a rheometric technique developed to measure the complex shear modulus of viscous liquids near their glass transition temperature. We report recent advances to the PSG technique: (1) The data extraction procedure is optimized, which extends the upper limit of the frequency range of the method to between 50 and 70 kHz. (2) The measuring cell is simplified to use only one piezoelectric ceramic disk instead of three. We present an implementation of this design intended for liquid samples. Data obtained with this design revealed that a soft extra spacer is necessary to allow for thermal contraction of the sample in the axial direction. Model calculations show that flow in the radial direction is hindered by the confined geometry of the cell when the liquid becomes viscous upon cooling. The method is especially well-suited for—but not limited to—glassy materials.