Some of the most important members in the Institutes past are : Herbert Freundlich , James Franck , Paul Friedlander , Rudolf Ladenburg , Michael Polanyi , Eugene Wigner , Ladislaus Farkas , Hartmut Kallmann , Otto Hahn , Robert Havemann , Karl Friedrich Bonhoeffer , Ernst Ruska , Max von Laue , Rudolf Brill , Kurt Moliere , Jochen Block , Heinz Gerischer , Rolf Hosemann , Kurt Ã berreiter , Alex Bradshaw , and Gerhard Ertl . To the illustrious past members of the Institute belong Herbert Freundlich , James Franck , Paul Friedlander , Rudolf Ladenburg , Michael Polanyi , Eugene Wigner , Ladislaus Farkas , Hartmut Kallmann , Otto Hahn , Robert Havemann , Karl Friedrich Bonhoeffer , Iwan N. Stranski , Ernst Ruska , Max von Laue , Gerhard Borrmann , Rudolf Brill , Kurt Moliere , Jochen Block , Heinz Gerischer , Rolf Hosemann , Kurt Ueberreiter , Alexander Bradshaw , Elmar Zeitler , and Gerhard Ertl .