Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Structure determination at the atomic level from dynamical electron diffraction data under systematic row conditions.

L J Allen1, M P Oxley

  • 1School of Physics, University of Melbourne, Parkville, Victoria, Australia. lja@physics.unimelb.edu.au

Ultramicroscopy
|July 21, 2001
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Relative roles of multiple scattering and Fresnel diffraction in the imaging of small molecules using electrons, Part II: Differential Holographic Tomography.

Ultramicroscopy·2021
Same author

Relative roles of multiple scattering and Fresnel diffraction in the imaging of small molecules using electrons.

Ultramicroscopy·2020
Same author

The Standardization of Outpatient Procedure (STOP) Narcotics after anorectal surgery: a prospective non-inferiority study to reduce opioid use.

Techniques in coloproctology·2020
Same author

Phonon Spectroscopy at Atomic Resolution.

Physical review letters·2019
Same author

Structure Retrieval at Atomic Resolution in the Presence of Multiple Scattering of the Electron Probe.

Physical review letters·2019
Same author

Large angle illumination enabling accurate structure reconstruction from thick samples in scanning transmission electron microscopy.

Ultramicroscopy·2018
Same journal

Predictive drift compensation of multi-frame STEM via live scan modification.

Ultramicroscopy·2026
Same journal

Deep PACBED: Multitask analysis of PACBED images using deep neural networks.

Ultramicroscopy·2026
Same journal

Guided progressive reconstructive imaging: A new quantization-based framework for low-dose, high-throughput and real-time analytical ptychography.

Ultramicroscopy·2026
Same journal

Brightness optimization in a 200 keV DTEM source by geometry-driven aberration suppression.

Ultramicroscopy·2026
Same journal

Characterization of the Timepix4 hybrid pixel detector and its impact on four-dimensional scanning transmission electron microscopy (4D-STEM).

Ultramicroscopy·2026
Same journal

Contamination analysis of the residual gas composition in transmission electron microscopy.

Ultramicroscopy·2026
See all related articles

This study presents a new method for atomic-level crystal structure determination using transmission electron microscopy. It overcomes phase retrieval issues in dynamical diffraction, enabling accurate projected potential reconstruction.

Area of Science:

  • Materials Science
  • Crystallography
  • Electron Microscopy

Background:

  • High-resolution transmission electron microscopy (HRTEM) is crucial for atomic-level crystal structure analysis.
  • Dynamical diffraction data under systematic row conditions are essential for obtaining structural information.
  • Accurate phase retrieval of the exit surface wave function is a critical challenge in HRTEM.

Purpose of the Study:

  • To develop and validate a method for atomic-level crystal structure determination using HRTEM.
  • To address limitations in phase retrieval algorithms that can lead to incorrect solutions.
  • To enable unique determination of the projected crystal potential from dynamical diffraction data.

Main Methods:

  • Utilizing N-beam approximation with a fixed incident energy and N incident beam orientations.

Related Experiment Videos

  • Employing Fourier transformation of the exit surface wave function to obtain scattering matrix columns.
  • Comparing phase retrieval using flux conservation algorithms with through-focal series and Gerchberg-Saxton algorithms.

    • Main Results:

    • Phase retrieval algorithms based on flux conservation can yield incorrect phase solutions due to phase singularities and edge dislocations.
    • Through-focal series and Gerchberg-Saxton algorithms successfully retrieve the correct phase and exit surface wave function.
    • Demonstration of how edge dislocations arise in phase retrieval using a model example.

    Conclusions:

    • Accurate phase retrieval is essential for determining the scattering matrix and reconstructing crystal structures.
    • The Gerchberg-Saxton algorithm and through-focal series provide reliable methods for phase retrieval in HRTEM.
    • The validated method allows for unique inversion of dynamical scattering to obtain the projected crystal potential.