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Precession Electron Diffraction (PED)

Precession Electron Diffraction (PED)

Transmission Electron Microscope (TEM) allows to study nm size crystals. By tilting (manually/automatically) around an arbitrary axis a single nanocrystal (tilt range usually > 120º e.g. 120 diffraction patterns with 1º) in combination with precession electron diffraction (PED), the reciprocal cell can be reconstructed and crystal cell parameters can be evaluated automatically and precisely (error 2-5%). Reflection intensities can also be measured automatically (Completeness of reciprocal space>60%) to enable the solution of the crystal structure.

Precession Electron Diffraction (PED) Specification

  • The DigiSTAR digital precession unit is easily retrofit to any TEM100-300KV (LAB6 /w-FEG), alignments are stored in memory.
  • ab-initio structure determination of any nanostructure using exclusively electron diffraction intensities.
  • 3D cell reconstruction when used in combination with 3D diffraction tomography.
  • Phase and orientation mapping when couples with ASTAR
  • Easy Symmetry determination for nanocrystals (space and point group)
  • Accurate stoichiometry refinement for nanostructures.
Advanced TEM Tools
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3D Tomography
Digistar
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