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Updated: May 29, 2026

Atom Probe Tomography Studies on the Cu(In,Ga)Se2 Grain Boundaries
09:51

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Published on: April 22, 2013

Dynamic reconstruction for atom probe tomography.

Baptiste Gault1, Shyeh Tjing Loi, Vicente J Araullo-Peters

  • 1Australian Centre for Microscopy and Microanalysis, Madsen Building F09, The University of Sydney, NSW 2006, Australia. baptiste.gault@sydney.edu.au

Ultramicroscopy
|September 28, 2011
PubMed
Summary
This summary is machine-generated.

Atom probe tomography reconstruction accuracy is limited by assuming constant geometric parameters. A new algorithm dynamically adjusts these parameters, improving 3D atom map analysis for materials science.

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Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Computational Science

Background:

  • Atom probe tomography (APT) reconstruction methods, established in 1995, often assume constant geometric parameters.
  • This assumption has historically limited the precision of 3D atom map generation in APT analyses.
  • Previous APT reconstruction algorithms have not adequately addressed parameter variability during analysis.

Purpose of the Study:

  • To evaluate the impact of assuming constant geometric parameters on APT reconstruction accuracy.
  • To investigate the validity of this assumption in the analysis of low-alloyed materials.
  • To develop and propose an improved APT reconstruction strategy that accounts for parameter variations.

Main Methods:

  • Testing the assumption of constant geometric parameters in APT reconstruction for low-alloyed materials.
  • Utilizing recently developed methods for measuring tomographic reconstruction parameters.
  • Implementing and validating a novel reconstruction algorithm designed for dynamic parameter accommodation.

Main Results:

  • The assumption of constant geometric parameters significantly limits the accuracy of APT reconstructions.
  • Variations in tomographic parameters were observed during the analysis of low-alloyed materials.
  • The proposed dynamic reconstruction algorithm effectively mitigates limitations caused by parameter variations.

Conclusions:

  • Constant geometric parameter assumptions in APT are a significant source of analytical error.
  • Dynamic adjustment of reconstruction parameters is crucial for accurate 3D atom mapping.
  • The novel algorithm offers a pathway to enhanced precision in atom probe tomography analysis.