Contact

Moritz Fleischer

Events I Public Relations
Communication & Media Relations
m.fleischerAthzdr.de
Phone: +49 351 260 3498

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HZDR Research Talks

The HZDR Research Talks usually take place on Wednesdays from 1:00 to 2:00 p.m.

The next dates are:


March 17, 2021 "Transmission electron microscopy for the characterization of nanoscale materials"

by Dr. René Hübner (Structural Analysis)

Understanding the physical and chemical properties of various materials demands detailed knowledge about their shape, structure, and composition. Particularly for nanoscale materials, characterization methods with high spatial and analytical resolution are required. Due to the small wavelength of strongly accelerated electrons, transmission electron microscopy (TEM) is one of the most appropriate nanoscale analysis techniques. Moreover, due to the tremendous range of signals arising from electron-solid interaction, a broad range of analysis modes are nowadays available in a transmission electron microscope.
After introducing the advantages of TEM, the basic setup of a transmission electron microscope, and the equipment available at HZDR for performing TEM analyses, the most important modes of imaging are presented, including bright-field, dark-field, and high-resolution imaging in TEM and scanning TEM (STEM) mode. It is shown, how diffraction analysis is used to derive structure and orientation information, while energy-dispersive X-ray spectroscopy (EDXS) and electron energy-loss spectroscopy (EELS) are applied for chemical composition analysis. Using examples from various research and application fields, including e.g. information technology, resource ecology, and radiopharmacy, the various TEM analysis modes are illustrated, and their combination is shown to be essential for a comprehensive understanding of nanoscale materials.


The HDZR Research Talks are a program for HZDR employees of all research fields. Within this framework, scientists give lectures on current projects, methods and procedures and look forward to exchanging ideas with colleagues in order to jointly develop ideas and initiate projects. The Research Talks are also open to external interested parties.

  • Lectures and discussions are held in English.
  • Participation is free of charge.
  • Registration is not required. External visitors need to check in at the HZDR main entrance 30 min in advance.

Initiator:
Dr. Franziska Lederer (Helmholtz Institute Freiberg for Resource Technology, Dept. Biotechnology)
Phone: +49 351 260 2427
E-Mail: f.lederer@hzdr.de

Co-organizers:
Dr. Kristof Zarschler (Institute of Radiopharmaceutical Cancer Research, Dept. Radionuclide Theragnostics)
Phone: +49 351 260 3678
E-Mail: k.zarschler@hzdr.de

Dr. Peter Zahn (Institute of Ion Beam Physics and Materials Research, Dept. Scaling Phenomena)
Phone: +49 351 260 3121
E-Mail: p.zahn@hzdr.de

Dr. Björn Drobot (Institute of Resource Ecology, Dept. Biogeochemistry)
Phone: +49 351 260 2759
E-Mail: b.drobot@hzdr.de

Dr. Sandra Hamann (Research Programmes and International Projects)
Phone: +49 351 260 3649
E-Mail: s.hamann@hzdr.de


Past lectures: