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Materials Science Lab
The materials science laboratory provides scientists with techniques for analysis and preparation of samples for subsequent neutron scattering experiments. It offers a range of tools for sample preparation and basic sample characterization techniques such as micro-hardness measurements and optical microscopy. In addition, it houses a quenching and deformation dilatometer and a multi-detector environmental scanning electron microscope (jointly operated by Helmholtz-Zentrum Hereon and Forschungszentrum Jülich).
Environmental Scanning Electron Microscope (ESEM) Thermo Fischer Quattro S
Beyond conventional SEM imaging, this microscope is equipped to operate in a water vapour or other gas such as Nitrogen or air at pressures up to 4000 Pa. This allows investigation of uncoated samples makes it possible to maintain a certain level of hydration for soft matter and biological samples.
The instrument is equipped with standard Everhart-Thornley detector (ETD) for secondary electron and backscattered electron detection but also with additional detectors for directional backscattered electron detection in high vacuum mode. Available are also specific low vacuum detector (for SE and BSE), Gaseous Secondary Electron (GSED) and Directional Gaseous Analytical (BSE) detectors as well as a Retractable Annular Scanning Transmission Electron Microscopy (STEM) detector which are suitable for ESEM mode.
Finally the instrument is equipped with a Thermo Fischer EDS UltraDry detector for elemental analysis and mapping.
A Quenching & Deformation Dilatometer (TA instruments DIL 805A/D/T) is operated in the MatSciLab to characterize mechanical properties of materials as a function of temperature.
Beyond lab use, this instrument as been modified to allow in-situ neutron scattering experiments (up to now SANS and diffraction studies, imaging experiments are in preparation) .
This setup is able to submit samples to a temperature ramp while measuring their change in length or while putting themunder compressive/tensile forces (up to 20/8 kN, respectively).
The sample is inductively heated and gas cooled according to a user-defined parameters (linear or exponential cooling rates…). The temperature range goes from room temperature up to 1500°C, the heating rate can be up to 100°C/s and quenching speed of the order of 2500°/s can be reached. Deformation rates range between 0.01 and 200 mm/s. Special holders for powders are in preparation. Depending on users demand, the temperature range can be extended down to -160°C with an additional configuration.
Phone: +49 (0)89 158860-806
Dr. Sebastian Busch
Phone: +49 (0)89 158860-764
Dr. Cecilia Solís
Phone: +49 (0)89 158860-882
Scanning Electron Microscope (SEM)
Phone: +49 (0)89 158860-747
Phone: +49 (0)89 158860-806