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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.

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.

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Principal Investigator

Prof. Dr.-Ing. Axel S. Herrmann

Application Scientist

Dr. Wolf-Achim Kahl

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

Am Fallturm 1, D-28359 Bremen
Phone:   +49 421 218 64581
Fax:         +49 421 218 64599
Email: wakahlprotect me ?!uni-bremenprotect me ?!.de
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
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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
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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
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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

3D printing colloidal assembly
3D Materials Analytics|

Strong Macroscale Supercrystalline Structures by 3D Printing Combined with Self‐Assembly of Ceramic Functionalized Nanoparticles

Berta Domènech, Alvin T. L. Tan, Hans Jelitto, Eduardo Zegarra Berodt, Malte Blankenburg, Oliver Focke, Jaclyn Cann, C. Cem Tasan, Lucio Colombi Ciacchi, Martin Müller, Kaline P. Furlan, A. John Hart, Gerold A. Schneide

Advanced Engineering Materials (2020) 22, 2000352

https://doi.org/10.1002/adem…

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3D Material Analyse
3D Materials Analytics|

Crystal surface reactivity analysis using a combined approach of X-ray micro-computed tomography and vertical scanning interferometry

Wolf-Achim Kahl, Tao Yuan, Till Bollermann, Wolfgang Bach, Cornelius Fischer

American Journal of Science (2020) 320, 27-52.

doi: 10.2475/01.2020.03 

Dissolution rates of porous crystalline materials reflect the superposition of transport and surface control, mainly via the parameters saturation…

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Picture of A new test system for unraveling the effects of soil components on the uptake and toxicity of silver nanoparticles (NM-300K) in simulated pore water
3D Materials Analytics|

A new test system for unraveling the effects of soil components on the uptake and toxicity of silver nanoparticles (NM-300K) in simulated pore water

Moira S. McKee, Jan Köser, Oliver Focke, Juliane Filser

Science of The Total Environment (2019) 673, 13-621

https://doi.org/10.1016/j.scitotenv.2019.03.493

Fate, bioavailability and toxicity of silver nanoparticles (AgNP) are largely affected by soil properties. Here we focused on how these…

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