Some of the most important members in the Institutes past are: Herbert Freundlich, Paul Friedlander, Rudolf Ladenburg, Michael Polanyi, Ladislaus Farkas, Hartmut Kallmann, Robert Havemann, Karl Friedrich Bonhoeffer, Rudolf Brill, Kurt Moliere, Jochen Block, Heinz Gerischer, Rolf Hosemann, Kurt Überreiter, and Alex Bradshaw.