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TopoTEM: A Python Package for Quantifying and Visualizing Scanning Transmission Electron Microscopy Data of Polar

Eoghan N O'Connell¹, Kalani Moore¹, Elora McFall¹

¹Department of Physics, Bernal Institute, University of Limerick, Limerick, Ireland.

Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada

|March 23, 2022

Summary

Researchers developed the TEMUL Toolkit, a Python package for analyzing atomic-resolution images from transmission electron microscopy (TEM). This tool quantifies atomic displacements to visualize polar topologies in multiferroic materials.

Keywords:

STEM open source polarization python topology

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Area of Science:

Materials Science
Condensed Matter Physics
Nanotechnology

Background:

Multiferroic materials exhibit complex polar topologies at subatomic scales.
Aberration-corrected transmission electron microscopy (TEM) is crucial for imaging these structures.
Quantifying atomic displacements within unit cells is essential for understanding material properties.

Purpose of the Study:

Introduce the TEMUL Toolkit, a Python package for analyzing and visualizing atomic-resolution TEM images.
Focus on the TopoTEM module for streamlined calculation of atomic displacements and polarization plotting.
Facilitate research in topology-based nano-electronic and quantum materials.

Main Methods:

Utilizing open-access Python packages for TEM atomic position quantification.
Developing the TEMUL Toolkit with a specific module (TopoTEM) for data analysis.
Implementing streamlined algorithms for calculating atomic displacements relative to the lattice.

Main Results:

Demonstration of a simplified method for calculating atomic displacements from TEM images.
Successful visualization of polarization within multiferroic material structures.
Creation of an accessible tool for the scientific community.

Conclusions:

The TEMUL Toolkit, particularly the TopoTEM module, provides an accessible method for analyzing atomic-scale structures.
This open-access toolkit aims to support advancements in quantum materials and nano-electronics.
Community contributions are encouraged to further develop this valuable research resource.