Harald Rose, Correction of Aberrations – Past – Present – and Future Perspectives
YUCOMAT 2021
Herceg Novi, Montenegro, 2021
YUCOMAT 2021
Openning
YUCOMAT 2021
Competition : : Best Poster Presentation
YUCOMAT 2021
Competition : : Best Poster Presentation
YUCOMAT 2021
MRS Serbia
YUCOMAT 2021
Competition : : Best Poster Presentation
YUCOMAT 2021
Yury Gogotsi - Award for a Lasting and Outstanding Contribution to Materials Science and Engineering
YUCOMAT 2021
Herceg Novi, Montenegro, 2021
YUCOMAT 2021
In Between
YUCOMAT 2021
Awards & Closing
YUCOMAT 2021
Herceg Novi, Montenegro, 2021
YUCOMAT 2021
Audience
YUCOMAT 2021
Discussion
YUCOMAT 2021
In Between
YUCOMAT 2021
Poster Session
YUCOMAT 2021
Audience
YUCOMAT 2021
Discussion
YUCOMAT 2021
Audience - outside
YUCOMAT 2021
MRS Serbia
YUCOMAT 2021
Discussion
YUCOMAT 2021
Herceg Novi, Montenegro
YUCOMAT 2021
In Between
YUCOMAT 2021
MRS Serbia
YUCOMAT 2021
Herceg Novi, Montenegro
YUCOMAT 2021
MRS Serbia
YUCOMAT 2021
Audience
YUCOMAT 2021
Herceg Novi, Montenegro

Harald Rose

Ulm University


Aberration correction can be considered as a quantum step in the development of the electron microscope. The correction of spherical aberration, the improved electrical and mechanical stability of the basic instrument, the development of monochromators, detectors, and corrected energy filters have transformed the electron microscope from a crude imaging instrument into a high-performance analytical instrument providing sub-eV spectroscopic information and sub-Angstroem spatial resolution at voltages above about 80kV. The additional correction of the chromatic aberration and the off-axial coma has further improved the performance of the microscope, giving atomic resolution down to 20kV. The requirements necessary for achieving successful aberration correction are illustrated by outlining  the evolution of correctors starting from simple systems and ending with the most advanced corrector employed in the SALVE microscope. This microscope has reached a resolution limit of 15λ which is about seven times smaller than the resolution limit of a non-corrected TEM. The improvement of resolution and contrast in the SALVE microscope by means of the Cc/Cs corrector will be documented by experimental results. The correction of chromatic aberration enables the use of elastically and inelastic scattered electrons for image formation without loss of intensity and degradation of resolution. This possibility is especially important for imaging dose-limited objects. Moreover, the action of other correctors will be shown for different microscopes operating in the range between 10V and 300kV.  Perspectives will be suggested to further increase the information on the atomic structure of radiation-sensitive objects and to enable optical sectioning with atomic resolution.

Plenary lectures - YUCOMAT 2018

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