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$Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples$

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Published on: June 19, 2018

A software tool for automatic analysis of selected area diffraction patterns within Digital Micrograph™.

C H Wu¹, W T Reynolds, M Murayama

¹Materials Science and Engineering Department, Mail Code 0237, Virginia Tech, Blacksburg, VA 24061, USA. will172@vt.edu

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|November 15, 2011

Summary

This summary is machine-generated.

A new software, AutoSADP, automates the analysis of transmission electron microscopy (TEM) selected area diffraction patterns (SADPs). This tool accurately measures d-spacing and interplaner angles from various complex diffraction patterns.

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Area of Science:

Materials Science
Crystallography
Software Development

Background:

Accurate analysis of diffraction patterns is crucial for materials characterization.
Manual measurement of d-spacing and interplaner angles from TEM SADPs can be time-consuming and prone to error.

Purpose of the Study:

To develop an automated software tool for analyzing transmission electron microscopy selected area diffraction patterns (TEM SADPs).
To enhance the efficiency and accuracy of measuring d-spacing and interplaner angles from single crystal diffraction data.

Main Methods:

Development of the AutoSADP software package as a macro for Digital Micrograph.
Implementation of iterative cross-correlation algorithms to identify the forward scattered beam and diffraction spot coordinates.
Utilizing pixel ratio for d-spacing and interplanar angle determination.

Main Results:

AutoSADP successfully automates the measurement of d-spacing and interplaner angles.
The software demonstrates robustness with various challenging diffraction patterns, including asymmetric, off-zone axis, streaked, and noisy patterns.
Achieved accuracy of better than 2% for d-spacing and interplanar angle measurements.

Conclusions:

The AutoSADP tool provides a reliable and automated method for analyzing TEM SADPs.
This software package significantly improves the speed and precision of crystallographic analysis in materials science.
AutoSADP is a valuable complementary tool for researchers working with diffraction data.