Unlock crystallographic & microstructural secrets of your samples

Diffraction Contrast Tomography in your laboratory

Do you want to perform non-destructive mapping of grain morphology in 3D to characterize materials like metals, alloys or ceramics? Discover the first commercially available lab-based diffraction contrast tomography (DCT) technique for complete three-dimensional imaging of grains in your sample. Two powerful solutions—LabDCT and CrystalCT—allow you to directly visualize 3D crystallographic grain orientation. Powered by the advanced GrainMapper3D software, it opens new ways to investigate a variety of polycrystalline materials.

CrystalCT: Get superior sample representivity from advanced diffraction scan modes

ZEISS Xradia CrystalCT advances materials characterization, modeling, and discovery through ground-breaking diffraction scanning modes.

  • Provides unprecedented sample representivity
  • Enables scanning larger sample volumes
  • Simplifies sample prep, and handling of irregular / realistic sample shapes
  • Increases speed
  • Addresses sample specificity

Inspired by nature’s golden angle, advanced scanning modes deliver helical phyllotaxis schema to manage a wide range of sample shapes and sizes, and overcomes some of the previous challenges of conventional DCT:

  • Helical phyllotaxis when your sample is tall and narrow
  • Helical phyllotaxis raster when your sample is large and wide
  • Helical phyllotaxis with high aspect ratio tomography (HART) for flat samples.

The technology behind LabDCT and CrystalCT

DCT projection images produce distinct diffraction patterns on the detector based on their focusing geometries. In Laue focusing mode, grains produce diffraction spots that are sharp lines on the scintillator-coupled objective-based detector. Projection geometry uses the flat panel detector positioned in the magnifying or defocused position to collect diffraction spots that appear as projected shape profiles of the corresponding diffracting grains. ZEISS Xradia 620 Versa uses the 4X DCT objective and can optionally be equipped with the flat panel for enabling projection modeacquisitions, whereas ZEISS Xradia CrystalCT uses its dedicated flat panel detector in projection mode for grain mapping.

LabDCT on Versa: Laue focusing geometry with the 4X DCT objective
CrystalCT: Projection or Laue focusing geometry onto a flat panel detector

3D Crystallographic Grain Mapping

3D Grain Reconstruction

Index grain data precise, fast & automated

After the initial acquisition as the first step in your workflow you then start to reconstruct. Load your absorption tomography and your diffraction data into GrainMapper3D. Let it identify potential candidates for grain orientations of a given polycrystal by using back and forward projections.

An automated, iterative search for grains in the sample volume is your next step. Grain reconstruction results are stored as stacks of slices or volume datasets that contain the full description of the indexed grains. Eventually, share 3D LabDCT results with your collaborators or customers using the standalone GrainMapper3D Viewer application.

3D Grain Mapping

Get all information in one file

Your final step is to get out all the information you need in one single file. Shape, orientation and spatial locations of all grains in the sample volume are exported into an open data format.

Finish your experiment with subsequent analyses using customized software or simulation tools. The advanced indexation routines now support the more complex lower symmetry crystal systems.

GrainMapper 3D is a 3D crystallographic grain reconstruction software developed by ZEISS collaboration partners Xnovo Technology ApS, Denmark

Novel materials research enabled by two powerful X-ray solutions

ZEISS LabDCT is an optional module for ZEISS Xradia 620 Versa, the highest performing, most versatile next generational X-ray microscope with Resolution at a Distance (RaaD). Learn more

ZEISS Xradia CrystalCT is the world’s first commercially available laboratory DCT built on a microCT platform, which is additionally a highly-functional imaging system providing superb resolution and image quality for a range of 3D imaging needs. Learn more

Download the DCT technology note

White Paper

Laboratory-based Diffraction Contrast Tomography

Questions? Get in Touch with Us

Let’s talk about your research

Get in touch with us to find out more about the benefits of CrystalCT and LabDCT, X-ray microscopy and other ZEISS solutions for your research, book a demo at our customer center, or get a quote. We are looking forward to hearing from you.