About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Novel Strategies for Rapid Acquisition and Processing of Large Datasets from Advanced Characterization Techniques
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Presentation Title |
Application of The Polyhedral Template Matching Method for Characterization of 2D Atomic Resolution Electron Microscopy Images |
Author(s) |
Darcey Britton, Douglas L. Medlin, Alejandro Hinojos, Michelle Hummel, David P. Adams |
On-Site Speaker (Planned) |
Darcey Britton |
Abstract Scope |
We present an adaptation of the polyhedral template matching method to a form for analysis of two-dimensional STEM and TEM images. The two-dimensional polyhedral template matching (2D-PTM) method uses Matlab code to identify certain structures, such as FCC <110>, BCC <111>, and HCP <2110>, in images by scaling and rotating two-dimensional templates of these structures. This process also involves identifying the neighboring atomic peaks for each atomic peak in an image, which can then be compared analytically to the provided templates. We demonstrate the method for examples in nanocrystalline gold and martensitic phases in austenitic stainless steel and also cover extensive calculations on uncertainty and the distinguishability between different structure types. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the US DOE’s NNSA under contract DE-NA-0003525. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Computational Materials Science & Engineering, |