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Meeting 2019 TMS Annual Meeting & Exhibition
Symposium Characterization of Materials through High Resolution Imaging
Presentation Title Multi-angle Bragg Projection Ptychography with Probe Retrieval
Author(s) Peng Li, Felix Hofmann, Steven Leake, Marc Allain, Virginie Chamard
On-Site Speaker (Planned) Peng Li
Abstract Scope X-ray Bragg ptychography is a scanning coherent diffraction imaging microscopy technique that can produce 3D maps of the crystalline structure of an extended nanostructured crystal at about 10nm resolution. With Bragg projection ptychography, the 3D maps can be extracted from an extremely sparse data-set. This new strategy substantially reduces the acquisition time and mitigates problems, linked to radiation damage and instabilities, faced by conventional Bragg ptychography. However, the success of the image reconstruction is based on a good knowledge of the probe, whose uncertainties degrade the object reconstruction. In this talk, we solve this problem by proposing a simultaneous reconstruction of the probe and object functions. This is based on a strong but natural constraint of the probe properties. We demonstrate our approach on a He-implanted poly-crystalline Tungsten sample measured at ID01-ESRF. These findings open new possibilities for this imaging technique. Project supported by European Research Council (H2020 grant #72881).
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Mapping of Subgrains with High Resolution 3DXRD
A Fast Algorithm for Improving Reconstruction Quality with Incomplete Tomography Data
Advances in Fatigue Crack Growth Characterization via In Situ Phase Contrast Tomography Imaging
Coherent Diffraction Imaging at High X-ray Energies
Computational Investigation of Limits of Bragg Coherent Diffraction Imaging
Deep Learning of Inverse Problems in Scanning Transmission Electron Microscopy/Scattering
Deep Neural Networks for Feature Extraction and Image Reconstruction from Coherent X-ray Diffraction Imaging Data
Deformation Behavior of Functionally Graded Polymeric Foams Using X-ray Tomography
Direct Observation of Point to Parallel Array Cu GB Segregation Behavior in Al Alloy 7075
Examining Dzyaloshinskii Domain Walls in Asymmetric Pt/Co/Ni/Ir Superlattices Using Lorentz TEM
Exploring Ion-irradiation Damage Using Bragg Coherent X-ray Imaging and 3D Transmission Electron Microscopy
Hard X-ray Coherent Diffraction Imaging Using Nanoscale Focusing Optics
High Throughput Nano-size Precipitates Characterization of Steels with Unprecedented Statistics: Transmission Kikuchi Diffraction on Extraction Replicas
Identification and Visualization of Chemical Outliers through Scientific Data Mining in Nanoscale Spectro-microscopic Study of NMC Electrode
In Situ Loading of Engineered Materials during X-ray 3D Tomographic Imaging
Investigation of Helium Precipitates in Ta(Ti)/Zr(Ti) Composites Made by Solid Metal Dealloying
K-18: High-resolution Multi-modal Imaging Capability at the Hard X-ray Nanoprobe Beamline of NSLS-II
Learning CDI Reconstructions with Backpropagation
Materials Characterisation via Optical Ptychographic Imaging: Principles and Applications
Measurements of Irradiation Induced 3D Strain Field at the Nanoscale with X-ray Bragg Coherent Diffraction Imaging
Multi-angle Bragg Projection Ptychography with Probe Retrieval
Multi-modal 3D Imaging of LiNi1-x-yMnxCoyO2 Cathode Material with Concentration-gradient
Multi-reflection Bragg Coherent Diffractive Imaging of Real-world Materials Samples
Multimodal Imaging Using Hard X-ray Speckle
Photoelastic Ptychography for Anisotropic Imaging of Optically Transparent Samples
Recent Development of Full-field X-ray Microscope at NSLS-II - A Case of Battery Research
Revealing the Growth Dynamics of Nature’s Forbidden Crystals
Sparse Dictionary Learning Methods for Coherent X-ray Diffractive Imaging
STEM Diffraction Contrast Image Simulations for Complex Dislocation Configurations
Three-dimensional Imaging of Vortex Phases in Ferroic Materials
Ultrahigh-speed X-ray Imaging for Studying Materials Structure Dynamics
Understanding Catalyst Complexity at Synchrotron Light Sources Using Hard X-ray Ptychography and Tomography
X-ray Coherent Surface Scattering Imaging for Surface 3D Imaging and Material Characterization

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