1. Department of Health Sciences and Technology, ETH Zürich, Schmelzbergstrasse 9, 8092 Zürich, Switzerland
2. Laboratory for Cellulose & Wood Materials, EMPA, Überlandstrasse 129, 8600 Dübendorf, Switzerland
3. Department of Materials, ETH Zürich, Wolfgang-Pauli-Strasse 10, 8093 Zürich, Switzerland