Through his experience and expertise in instrumental techniques, particularly neutron optics, Maier-Leibnitz was one of the first to realize that the neutron flux from the FRM was too low for some interesting experiments. Maier-Leibnitz was instrumental, along with Louis Néel, in bringing about the German-French project to construct a high-flux neutron source and founded the Institut Laue-Langevin in Grenoble in 1967, named in honor of the physicist Max von Laue and Paul Langevin. The reactor had the first source of cold neutrons. From 1967 to 1972, Maier-Leibnitz was the first director of the Institut Laue-Langevin.