Transmission Electron Microscopy (TEM)
Austrian Scanning Transmission Electron Microscope (ASTEM)
The ASTEM (Austrian Scanning Transmission Electron Microscope) is a probe-
corrected high end TEM/STEM system (FEI Titan 60-300) that is equipped for high resolution
analytical research with unprecedented speed: thanks to the unique combination
of a high-sensitivity SDD X-ray spectrometer (Super-X) and a high-resolution
post-column energy filter (GIF Quantum) within one acquisition system, the
microscope offers high speed (up to 1000 spectra/s) simultaneous EELS/EDS
spectrum imaging for a wide range of analytical
investigations for both light and heavy elements.
FEI Tecnai F20*
This microscope is equipped with a monochromated FEG in combination with
a Quantum energy filter and is the high end instrument of the institute at the
moment. Besides classical methods (bright field and dark field imaging,
selected area and convergent beam diffraction) various analytical methods
(EDXS, EFTEM and EELS) as well as tomography are applied at both high spatial
and high energy resolution. Furthermore, the microscope can be used in
scanning transmission mode (STEM) supported by a novel digiscan unit
allowing for high-speed spectrum imaging.
Due to technical problems with the energy filter, the microscope is presently not operational.
FEI Tecnai 12
In combination with the Bioscan camera, the T12 is a microscope aimed at
biological research. However, it is used for a wide range of tasks such as
investigations of not only biological samples but also polymers, thin films,
fibers, ceramics, powders, single crystals and can also be used for acquisitionof 3D tomography tilt series and microanalysis using EDXS.