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

Element specific imaging with high lateral resolution: an experimental study on layer structures.

Freitag1, Mader

  • 1Institut für Anorganische Chemie der Universität Bonn, Römerstrasse 164, D-53117 Bonn, Germany.

Journal of Microscopy
|May 13, 1999
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

Measurement of lens aberrations by means of image displacements in beam-tilt series

Ultramicroscopy·2000
Same author

Inelastic electron holography

Ultramicroscopy·2000
Same author

The Microwave Spectrum of m-Tolunitrile: Methyl Internal Rotation and (14)N Nuclear Quadrupole Coupling.

Journal of molecular spectroscopy·2000
Same author

Radiofrequency, Centimeter-Wave, Millimeter-Wave, and Infrared Spectra of SiHF(3): Investigation of the Ground, v(4) = 1, and v(6) = 1 Vibrational States.

Journal of molecular spectroscopy·2000
Same author

Radio-Frequency, Centimeter-Wave, Millimeter-Wave, and Infrared Spectra of SiDF(3) in the v(6) = 1 Excited State.

Journal of molecular spectroscopy·1999
Same author

Donor/Acceptor Metallocenes: A New Structure Principle in Catalyst Design.

Angewandte Chemie (International ed. in English)·1999

High-resolution energy-filtering transmission electron microscopy (HR-EFTEM) chemically images atomic-scale structures in ceramic materials. This technique visualizes elemental distribution in superconductors and borides, revealing defects at interatomic distances.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemistry

Background:

  • Chemical imaging of atomic-scale defects in ceramic materials is crucial for understanding their properties.
  • Traditional methods struggle to resolve elemental composition at interatomic distances.
  • High-resolution electron energy-filtering transmission electron microscopy (HR-EFTEM) offers potential for nanoscale chemical analysis.

Purpose of the Study:

  • To demonstrate the capability of HR-EFTEM for chemically imaging individual atomic layers and planar defects in ceramic materials.
  • To analyze the elemental distribution within barium layers in cuprate superconductors and beta-tungsten boride (beta-WB) precipitates in titanium diboride (TiB2).

Main Methods:

  • Utilized a post-column imaging electron energy filter in a high-resolution transmission electron microscope.

Related Experiment Videos

  • Employed jump-ratio imaging techniques, focusing on specific elemental edges (Ba_N, B_K, Ti_L, Cr_L, W_M).
  • Applied normalization and background subtraction to enhance chemical contrast in element-specific images.

    • Main Results:

    • Successfully resolved 0.42 nm spaced barium layers in NdBa2Cu3O7-delta using Ba_N edge jump-ratio imaging.
    • Chemically mapped 0.8 nm thick beta-WB precipitates in doped TiB2, showing distinct elemental distributions (B, Ti, Cr, W).
    • Identified boron-deficient layers (0.38 nm spacing) within beta-WB precipitates and individual defects using boron jump-ratio images.

    Conclusions:

    • HR-EFTEM enables chemical imaging of structures at the scale of interatomic distances in ceramic materials.
    • The technique provides detailed elemental mapping of defects and layers in complex ceramic systems like superconductors and borides.
    • Element-specific images, after processing, are dominated by chemical contrast, overcoming interference from elastic scattering.