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Scanning Electron Microscopy

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Related Experiment Video

Updated: Jul 9, 2025

Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization

Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization

Published on: July 17, 2015

Weighted Burgers Vector analysis of orientation fields from high-angular resolution electron backscatter diffraction.

Joe Gardner¹, David Wallis², Lars N Hansen³

¹Department of Earth, Ocean and Ecological Sciences, University of Liverpool, UK.

Ultramicroscopy

|December 6, 2023

Summary

This summary is machine-generated.

High-angular resolution EBSD combined with the Weighted Burgers Vector method reveals low-angle substructures in crystalline materials. This powerful combination enhances analysis of dislocation types and densities in complex geological samples.

Keywords:

Geometrically necessary dislocations High-angular resolution electron backscatter diffraction Misorientation Olivine Plagioclase Weighted Burgers Vector

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Last Updated: Jul 9, 2025

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Analysis of SEC-SAXS data via EFA deconvolution and Scatter

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Published on: January 28, 2021

Area of Science:

Materials Science
Geophysics
Crystallography

Background:

The Weighted Burgers Vector (WBV) method analyzes dislocation types and densities in crystalline materials using electron backscatter diffraction (EBSD).
High-angular resolution EBSD (HR-EBSD) significantly improves angular precision over conventional EBSD.
The application of WBV to HR-EBSD data for analyzing low-angle substructures remained unexplored.

Purpose of the Study:

To investigate the synergy between WBV and HR-EBSD for characterizing crystalline materials.
To compare WBV analysis on conventional EBSD versus HR-EBSD data.
To guide future data acquisition strategies for analyzing microstructures.

Main Methods:

Applied the Weighted Burgers Vector (WBV) method to both conventional EBSD and high-angular resolution EBSD (HR-EBSD) datasets.
Analyzed data from plagioclase feldspar (Earth's lower crust) and olivine (upper mantle).
Focused on quantitative analysis of low-angle substructures and WBV direction precision.

Main Results:

HR-EBSD processing enables quantitative WBV analysis of low-angle substructures (≈0.1°) obscured in conventional EBSD data.
Combining WBV and HR-EBSD increases the precision of calculated WBV directions.
This enhanced precision is crucial for inferring deformation mechanisms, especially in low-symmetry crystals like plagioclase.

Conclusions:

HR-EBSD and WBV are complementary techniques for analyzing crystalline materials.
The combined approach is ideal for investigating complex natural materials with unknown deformation histories.
This method refines lattice orientation gradients, improving the understanding of geological deformation processes.