| 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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Diaz, Ana
Paul Scherrer Institute
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Phase-separated polymer blends for controlled drug delivery by tuning morphologycitations
- 20234D nanoimaging of early age cement hydrationcitations
- 20233D-Imaging of synapses in neuronal tissues with synchrotron X-ray ptychographycitations
- 2023In situ compression of micropillars under coherent X-ray diffraction: a case study of experimental and data-analysis constraintscitations
- 2023Simple Synthesis of Monodisperse Ultrasmall Au Icosahedral Nanoparticlescitations
- 2022Near-infrared analysis of nanofibrillated cellulose aerogel manufacturingcitations
- 2022Near-infrared analysis of nanofibrillated cellulose aerogel manufacturingcitations
- 2022Evolution of Hierarchically Porous Nickel Alumina Catalysts Studied by X‐Ray Ptychographycitations
- 2022Temperature-dependent dynamic plasticity of micro-scale fused silicacitations
- 2021Quantitative analysis of cementitious materials by X-ray ptychographic nanotomography
- 2020Comparison of small‐angle neutron and X‐ray scattering for studying cortical bone nanostructurecitations
- 2019Quantitative disentanglement of nanocrystalline phases in cement pastes by synchrotron ptychographic X-ray tomographycitations
- 2018Photonic materials for high-temperature applications: synthesis and characterization by X-ray ptychographic tomography
- 2017Anisotropy development during HDPE necking studied at the microscale with in situ continuous 1D SAXS scanscitations
- 2016Novel micro-reactor flow cell for investigation of model catalysts using in situ grazing-incidence X-ray scatteringcitations
- 2016Influence of gas atmospheres and ceria on the stability of nanoporous gold studied by environmental electron microscopy and in situ ptychography
- 2016Influence of gas atmospheres and ceria on the stability of nanoporous gold studied by environmental electron microscopy and in situ ptychographycitations
- 2014Scanning X-ray strain microscopy of inhomogeneously strained Ge micro-bridgescitations
- 2013Density mapping of hardened cement paste using ptychographic X-ray computed tomographycitations
- 2012Preparation and characterization of ellipsoidal-shaped thermosensitive microgel colloids with tailored aspect ratioscitations
Places of action
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article
Anisotropy development during HDPE necking studied at the microscale with in situ continuous 1D SAXS scans
Abstract
Quantitative information about microstructural reorganizations which occur during mechanical solicitation is important to increase our knowledge on the rheology of semi-crystalline polymers. This point is investigated here on High Density Polyethylene through the measurement of an anisotropy index calculated from small-angle X-ray scattering (SAXS) patterns. These were obtained in situ on a coherent synchrotron beamline with a very fast scanning of the specimen under tensile test. This allows the anisotropy development of many material points which undergo different deformation paths to be followed, thanks to necking development and propagation. With this field information, the microstructural anisotropy observable is shown to have a given value at a given true strain, meaning that strain pilots the bulk topology. Results apparently departing from that premise are shown indeed to be an experimental artifact: true strains are measured on the specimen surface, necking introduces strain heterogeneities in thickness, and the SAXS technique probes the full volume producing averaging.