ASTAR: Phase & Orientation mapping
at nm scale by 4D – SPED in TEM
Dr. Edgar Rauch & Dr. Muriel Veron,
University of Grenoble, SiMAP Laboratory CNRS France
December 2nd, 2020, 10:00-12:00 AM CET
The webinar will cover an introduction to Precession enhanced Phase & Orientation mapping for TEM (4D-Scanning Precession Electron Diffraction – 4D-SPED*). ASTAR system uses series of PED diffraction patterns of a scanning area of interest and a template matching approach to generate orientation and phase maps (up to 1-3 nm resolution).
Various materials as metals, alloys, minerals, nanostructures etc can be studied by ASTAR. Moreover, using common or interactive Virtual Bright Field images and Correlation Coefficient Map tools, superimposed secondary phases, hidden dislocations /defects and amorphous areas can be clearly highlighted locally in the material under studied at nm scale. Grain size distribution and texture analysis are further important tools to shed light to your materials local properties.Recent examples of ASTAR method will be presented. We hope you take this opportunity to learn about this advanced technique for TEM and visualize the wide range of exciting results obtained by 4D-SPED (ASTAR).
*4D SPED method is precession enhanced 4D-STEM technique
PRODUCTS & SOLUTIONS
Novel Automated Strain Mapping Solution for TEM/STEM (Patent pending) based on nanobeam precession diffraction patterns and STEM reference image acquisition. Precision up to 0.02% (200kV FEG) with spatial resolution < 2 nm (FEG TEM). In combination with TOPSPIN simultaneous orientation /phase /strain /STEM maps are possible.
NanoMEGAS is partner of the European Network for Transmission Electron Microscopy with expertize in electron difffraction/crystallography techniques and TEM orientation imaging
Read more at : www.esteem3.eu
ESTEEM3 – Enabling Science and Technology through European Electron Microscopy – is an EU funded project for electron microscopy, which aims at providing access to the leading European state-of-the-art electron microscopy research infrastructure. Facilitating and extending transnational access services of the most powerful atomic scale characterization techniques in advanced electron microscopy research to a wide range of academic and industrial research communities for the analysis and engineering of novel materials in physical, chemical and biological sciences.
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