The microgels studied by Sebastian Seiffert have promising potential for applications in medicine, for example, as artificial environments for cells, or as self-healing materials in materials technology. The development of such applications requires an understanding of how the behavior of these materials depends on their nanoscopic structure. The Seiffert Group studies these properties at Freie Universität Berlin with the support of the Nanoscale Focus Area. For his research Seiffert uses the large-scale facilities of the Helmholtz-Zentrum, both at the research reactor BER II in Wannsee and at the electronic storage ring BESSY II in Adlershof. He continues the work of various pioneers, including that of the ground-breaking Mainz chemist Reimund Stadler himself.