Room: 1113
Lab phone : +41 21 692 43 51
Contact person: Dr. Benita Putlitz (+41 21 692 44 43)
Head: Prof. Pierre Lanari
X-ray Computed Tomography (CT) is a non-destructive technique to visualize interior features within solid objects, and for obtaining digital information on their 3-D geometries and properties. The elements of X-ray tomography are the X-ray source (i.e. X-ray tube), a series of detectors that measure X-ray intensity attenuation along multiple beam paths (i.e. a CCD camera), and a rotational geometry (i.e. a rotational stage) with respect to the object being imaged.
Typical applications include:
- Measuring 3D size and spatial distribution of crystals, clasts, vesicles, etc.
- Non-destructive volumetric study of rare specimens (e.g. fossils, meteorites), but also routine study of internal structures of fossil and recent biological specimens
- 3D measurement of fluid flow fields, including porosity, micro porosity, and fracture extent and roughness
- 3D fabric determination (foliations, shape preferred orientations, network properties, fracture networks)
- Detection and examination of high-density economic trace phases
- Imaging of rock samples to optimize sample preparation for geochemical characterization (e.g., locating crystal central sections, spiral axes, solid and fluid inclusions)
The above list just gives a non-exhaustive overview of the potentials using this technique. CT data have been applied to virtually all field in geosciences, but also in material sciences, food science, biology, and many other disciplines.
SkyScan 1273
Recent μCT scanner offering high spatial resolution, short acquisition time and the ability to analyze heavy (up to 20 kg) and bulky (500 mm length, 300 mm diameter) samples. High-quality images can be acquired using a high-energy X-ray source (130 kV, 40 W) and a sensitive, large-format 6-megapixel flat-panel detector. Under optimal conditions, the voxel size is less than 3 µm.
