1. Department of Chemistry and Applied Biosciences ETH Zurich 8093 Zurich Switzerland
2. School of Materials Science and Engineering Shandong University Jinan 250061 P. R. China
3. Laboratory for Cellulose and Wood Materials Swiss Federal Laboratories for Materials Science and Technology (Empa) 8600 Dübendorf Switzerland
4. Department of Health Sciences and Technology ETH Zürich 8092 Zürich Switzerland
5. Department of Information Technology and Electrical Engineering ETH Zürich 8092 Zürich Switzerland