1. Department of Chemical Engineering, Cyprus University of Technology, 30 Archbishop Kyprianou Str., 3036 Limassol, Cyprus
2. Department of Materials, ETH Zürich, CH-8093 Zürich, Switzerland
3. Department of Chemical Engineering, University of Patras & FORTH-ICE/HT, Patras GR26504, Greece
4. Department of Mechanical and Process Engineering, Particle Technology Laboratory, ETH Zürich, Sonneggstrasse 3, CH-8092 Zürich, Switzerland