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Related Concept Videos

Preparation of Samples for Electron Microscopy01:20

Preparation of Samples for Electron Microscopy

To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...

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Related Experiment Video

Updated: May 19, 2026

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
08:44

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

Published on: August 22, 2017

Sample preparation methods for femtosecond electron diffraction experiments.

Maximilian Eichberger1, Marina Krumova, Helmuth Berger

  • 1Physics Department and Center of Applied Photonics and Zukunftskolleg, University of Konstanz, D-78464, Germany.

Ultramicroscopy
|August 29, 2012
PubMed
Summary
This summary is machine-generated.

Femtosecond electron diffraction reveals ultrafast dynamics in Charge Density Wave (CDW) materials. New sample preparation techniques yield high-quality thin films for advanced quantum material studies.

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Preparation of Nanoparticles for ToF-SIMS and XPS Analysis
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Preparation of Nanoparticles for ToF-SIMS and XPS Analysis
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Published on: September 13, 2020

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Ultrafast Spectroscopy

Background:

  • Charge Density Waves (CDWs) in materials like 1T-TaS2 exhibit complex dynamics relevant to strongly correlated electron systems.
  • Studying ultrafast phenomena in these materials requires advanced experimental techniques and high-quality samples.
  • Previous methods struggled to produce the necessary sample dimensions for detailed analysis.

Purpose of the Study:

  • To explore the ultrafast dynamics of the Charge Density Wave system in 1T-TaS2.
  • To develop and validate a sample preparation technique for producing thin, large, single-crystalline quantum materials.
  • To enable advanced structural and optical time-resolved studies on quantum materials.

Main Methods:

  • Femtosecond electron diffraction was employed to probe ultrafast structural dynamics.
  • An ultra-microtome was utilized for precise thinning of 1T-TaS2 single crystals.
  • Characterization techniques assessed stoichiometric and crystalline integrity of prepared films.

Main Results:

  • Direct information on the order parameter dynamics of Charge Density Waves was obtained.
  • Photo-induced phase transitions in CDW systems were investigated.
  • Successfully prepared free-standing single crystalline films of 1T-TaS2 (30 nm thick, 200 μm x 200 μm).

Conclusions:

  • Femtosecond electron diffraction is a powerful tool for studying ultrafast phenomena in quantum materials.
  • The developed ultra-microtome technique provides high-quality thin films essential for advanced studies.
  • This sample preparation method is crucial for future investigations of CDW dynamics and other time-resolved phenomena.