Timmo Weidner
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View article: Electron Channeling Contrast Tomography (ECCT): Dislocation Tomography Enabled by ECCI
Electron Channeling Contrast Tomography (ECCT): Dislocation Tomography Enabled by ECCI Open
3D characterization of dislocations is critical for understanding plastic deformation in crystalline materials but remainsexperimentally challenging. Transmission electron microscopy (TEM) provides 3D reconstructions of dislocations butthe…
View article: Reconstruction of dislocations via Electron Channeling Contrast Tomography
Reconstruction of dislocations via Electron Channeling Contrast Tomography Open
Three-dimensional characterization of dislocations is critical for understanding plastic deformation in crystalline materials but remains experimentally challenging. Transmission electron microscopy provides high-resolution 3D reconstructi…
View article: A zonal-dislocation-based mechanism for kink band formation in high c/a nano-layered hexagonal close-packed crystals
A zonal-dislocation-based mechanism for kink band formation in high c/a nano-layered hexagonal close-packed crystals Open
Kink bands (KBs) are localized regions that rotate relative to adjacent, undeformed areas. They typically form in crystalline materials characterized by strong structural anisotropy and limited slip activity, such as hexagonal close-packed…
View article: A model based on zonal dislocation walls for kink band formation in nano-layered HCP crystals
A model based on zonal dislocation walls for kink band formation in nano-layered HCP crystals Open
Kink bands (KBs) are localized regions that rotate relative to adjacent, undeformed areas. They typically form in crystalline materials characterized by strong structural anisotropy and limited slip activity, such as hexagonal close-packed…
View article: Evidence of Dislocation Mixed Climb in Quartz From the Main Central and Moine Thrusts: An Electron Tomography Study
Evidence of Dislocation Mixed Climb in Quartz From the Main Central and Moine Thrusts: An Electron Tomography Study Open
In this study we apply electron tomography to characterize 3D dislocation microstructures in two quartz mylonite specimens from the Moine and Main Central Thrusts, both of which accommodated displacements by dislocation creep in the presen…
View article: Evidence of Dislocation Mixed Climb in Quartz from the Moine and Main Central Thrusts: an Electron Tomography Study
Evidence of Dislocation Mixed Climb in Quartz from the Moine and Main Central Thrusts: an Electron Tomography Study Open
In this study we apply electron tomography to characterize 3D dislocation microstructures in two highly sheared quartz mylonite specimens from the Moine and Main Central thrusts which were deformed extensively by dislocation creep in the p…
View article: From electron tomography of dislocations to field dislocation mechanics: application to olivine
From electron tomography of dislocations to field dislocation mechanics: application to olivine Open
We propose a new procedure to extract information from electron tomography and use them as an input in a field dislocation mechanics. Dislocation electron tomography is an experimental technique that provides three-dimensional (3D) informa…
View article: From Electron Tomography of Dislocations to Field Dislocation Mechanics: application to olivine
From Electron Tomography of Dislocations to Field Dislocation Mechanics: application to olivine Open
Aligned and numerically filtered tilt-series of the PoEM9 specimen (double-tilt sample-holder + weak-beam dark-field conditions + precession angle = 0.1°+ objective aperture = 20 micron): Tilted-series 1: Projection angles from -48° to 52°…
View article: From Electron Tomography of Dislocations to Field Dislocation Mechanics: application to olivine
From Electron Tomography of Dislocations to Field Dislocation Mechanics: application to olivine Open
Aligned and numerically filtered tilt-series of the PoEM9 specimen (double-tilt sample-holder + weak-beam dark-field conditions + precession angle = 0.1°+ objective aperture = 20 micron): Tilted-series 1: Projection angles from -48° to 52°…