3D Materials Analytics

  • Volume reconstruction of Neolithic potsherds

    What we do

    We use X-rays to non-destructively inspect the three-dimensional distribution of matter inside the object of investigation

  • Volume reconstruction and slice of a lightweight aggregate

    What we do

    We use X-rays to non-destructively inspect the three dimensional distribution of matter inside the object of investigation

  • Colored volume reconstruction of fish bones

    What we do

    We use X-rays to non-destructively inspect the three dimensional distribution of matter inside the object of investigation

  • Volume rendering of submarine volcanic ash particle

    What we do

    We use X-rays to non-destructively inspect the three dimensional distribution of matter inside the object of investigation

  • Volume reconstruction of a four rooted maxillary first molar

    What we do

    We use X-rays to non-destructively inspect the three dimensional distribution of matter inside the object of investigation

3D X-ray microscopy & 3D X-ray microtomography

Our methods are based on the detection and subsequent localization of the degree of attenuation of the incident X-rays in the sample. The attenuation of X-rays by matter depends on both the chemical elements it consists of as well as the material density. The information about the varied X-ray absorption is encoded as grey values in the black-and-white images. The volume reconstruction facilitates, e. g., visualization of fabric compounds as 3D models, or preparation of virtual thin sections in any desired direction.

mehr

What kind of result do I get?

The result of our non-destructive 3D X-ray analysis is the reconstructed spatial distribution of X-ray attenuation within the object, in the form of a digital image stack or as an image volume. Each image consists of voxels (volumetric pixels) and allows quantitative analyses of volume and surface properties, or size distributions of different fabric compounds, etc. In addition, the transmission images can be supplied. Any analysis of the tomography data is possible in the context of scientific cooperation.

mehr

Area responsible

Prof. Dr. Wolfgang Bach

Application Scientist

Dr. Wolf-Achim Kahl

Lab Manager 3D X-Ray Microscope
MAPEX Center for Materials and Processes
University of Bremen 

GEO-Building, Room 5070
Klagenfurter Straße 2-4, D-28359 Bremen
Tel.   +49 421 218 65408
Fax   +49 421 218 65429
Email: wakahlprotect me ?!uni-bremenprotect me ?!.de
https://www.hmi.uni-bremen.de/Kahl/kahl_home.html

Our key instruments

View inside X-ray microscope cabinet

Zeiss Xradia 520 Versa
3D X-ray microscope

  • max. 10W, 160 kV
  • resolution 0.3 to 25 µm per voxel
  • Sample size ca. <1-50 mm
mehr
View of ProCon CT-ALPHA

ProCon CT-ALPHA
Micro X-ray computed tomograph

  • max. 50W, 190 kV
  • resolution 1-35 µm per voxel
  • Sample size 1-100 mm
mehr
Phoenix-xray v|tome|x m

Phoenix-xray v|tome|x m
Micro X-ray computed tomograph

  • 2 tubes: 320 W, 240 kV/15 W, 180 kV
  • resolution (2 tubes): >3 µm / <1 µm
  • Sample size: 1-60 mm
mehr

More available instruments

Current instrumentation belonging to MAPEX-CF can be found in the Instrument Database of the MAPEX Center for Materials and Processes.

A click on the logo will lead you to the database.

Research Highlights

Figure from the publication
3D Materials Analytics|

Timing of carbon uptake by oceanic crust determined by rock reactivity

Elmar Albers, Svenja Jöns, Axel Gerdes, Andreas Klügel, Christoph Beier, Simone A. Kasemann, Wolfgang Bach

Geology 51(2023), 875

https://doi.org/10.1130/G51238.1

Carbonate formation during the alteration of oceanic crust is a global CO2 sink. Its timing and controls are not well understood,…


XRM image
3D Materials Analytics|

Gas Atomization of Duplex Stainless Steel Powder for Laser Powder Bed Fusion

Cui, Chengsong, Felix Stern, Nils Ellendt, Volker Uhlenwinkel, Matthias Steinbacher, Jochen Tenkamp, Frank Walther, and Rainer Fechte-Heinen.

Materials. 2023; 16(1):435.

https://doi.org/10.3390/ma16010435

Duplex stainless steel powders for laser additive manufacturing have not been developed…


XRM
3D Materials Analytics| Spectroscopy|

Enhanced weathering in the seabed: Rapid olivine dissolution and iron sulfide formation in submarine volcanic ash

Wolf-Achim Kahl,  Andreas Klügel,  Wolfgang BachMangir Murshed

American Mineralogist (2022) 107 (9): 1668–1680.

https://doi.org/10.2138/am-2022-8057

In basaltic volcanic ash recovered from a seamount at 3000 m water depth, we discovered marcasite and pyrite precipitation within cavities that…