Edited byWendel Wohlleben, Advanced Materials and Systems Research, Department of Material Physics, BASF SE, Ludwigshafen, GermanyThomas A.J. Kuhlbusch, Air Quality and Sustainable Nanotechnology Unit, Institute of Energy and Environmental Technology (IUTA) e.V, Duisburg, GermanyJürgen Schnekenburger, Biomedical Technology Center, Westfälische Wilhelms-Universität, Münster, GermanyClaus-Michael Lehr, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS) Helmholtz Centre for Infection Research (HZI) and Department of Biopharmaceutics and Pharmaceutical Technology, Saarland University, Saarbrücken, Germany