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Using Synchrotron Radiation Microtomography to Investigate Multi-scale Three-dimensional Microelectronic Packages
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MULTEM: A new multislice program to perform accurate and fast electron diffraction and imaging simulations using

I Lobato1, D Van Dyck1

  • 1EMAT, University of Antwerp, Department of Physics, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.

Ultramicroscopy
|May 13, 2015
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Summary
This summary is machine-generated.

The MULTEM program offers fast and accurate multislice simulations for electron microscopy, enabling large-scale material analysis with reduced memory usage.

Keywords:
Electron scattering factorsGPUMultislice simulationsPhonons

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Area of Science:

  • Materials Science
  • Computational Physics
  • Electron Microscopy

Background:

  • Accurate simulations are crucial for interpreting electron microscopy data.
  • Existing methods may face limitations in speed, accuracy, or scale.
  • Advanced computational techniques are needed to model complex materials.

Purpose of the Study:

  • To present the features and GPU implementation of the MULTEM program.
  • To enable fast and accurate multislice simulations for various electron microscopy techniques.
  • To facilitate the simulation of large systems with millions of atoms.

Main Methods:

  • Developed a new multislice simulation program (MULTEM) with GPU implementation.
  • Incorporated higher-order expansion of the multislice solution and correct subslicing.
  • Implemented simulations for various techniques including CTEM, STEM, ED, PED, CBED, ADF-TEM, and ABF-HC.
  • Treated specimens as amorphous materials for straightforward frozen phonon approximation.
  • Managed memory requirements by calculating and discarding generalized transmission functions as needed.

Main Results:

  • Achieved accurate and fast multislice simulations.
  • Successfully implemented simulations for a wide range of electron microscopy techniques.
  • Enabled simulations of large systems containing millions of atoms.
  • Maintained reasonable computer memory requirements.

Conclusions:

  • The MULTEM program provides a powerful and efficient tool for multislice simulations in electron microscopy.
  • Its capabilities allow for detailed analysis of materials at an unprecedented scale.
  • The GPU implementation significantly enhances simulation speed and accessibility.