Diplom-Ingenieur in physics (1965), PhD (1968) and Habilitation (1971) in physical chemistry, Technical University of Berlin. Visiting scientist and visiting professor at the Johnson Foundation/University of Pennsylvania, University of Illinois at Urbana Champaign, the Gulbenkian Foundation in Lissabon and the Cefobi in Rosario/Argentina. Associate Professor of Biophysical Chemistry at the Technical University of Berlin (1973-1978), Full Professor and Head of the Department of Biophysics at the University of Osnabrück (1979-2007). Niedersachsenprofessur (2009-2014).
Research on photosynthesis, molecular bioenergetics, and membrane biology.
Past-member of the IUPAB board, -president of The International Society of Photosynthesis Research, -trustee of the Volkswagen Foundation. EMBO member and member of several biophysical, biochemical and physicochemical societies. Röntgen-Preis, Niedersachsen-Preis, Peter-Mitchell-Medal, Boris-Rajewsky-Preis, Bundesverdienstkreuz 1. Klasse; Lifetime Achievement Award, Rebeiz Found., Champaign, Illinois.