Prof. Ondrej Krivanek
(President, Nion Co and Adjunct Professor, Arizona State University, USA) - In 1997 Dr Krivanek founded Nion Co, that designed and built the first correctors for spherical aberration for the scanning transmission electron microscope (STEM) configuration that showed an improvement over the uncorrected performance. This development is undoubtedly the most important improvement in STEM since its initial invention.