The Ernst Ruska-Centre (ER-C) for Microscopy and Spectroscopy with Electrons is a German research establishment conjointly operated by the Jülich Research Centre and RWTH Aachen University on a pari passu basis.
Born in Brantford, Ontario, the son of James and Ethel (Cooke) Hillier, he received a Bachelor of Arts in Mathematics and Physics (1937), Master of Arts (1938), and a Ph.D (1941) from the University of Toronto, where, as a graduate student, he completed a prototype of the electron microscope that had been invented by Ernst Ruska.
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In the immediate post-World War II period, there were three German centers of research on electron microscopes: in Berlin under Ernst Ruska, in Mosbach under Brüche, and in Düsseldorf under Bodo von Borries.
He is currently Director of the Institute for Microstructure Research (PGI-5) and the Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (ER-C) in Forschungszentrum Jülich and Professor of Experimental Physics in RWTH Aachen University.