1. Department of Forest Biomaterials, North Carolina State University, 2820 Faucette Drive, Raleigh, North Carolina 27606, United States
2. Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Vuorimiehentie 1, Espoo 02150, Finland
3. Department of Applied Physics, School of Science, Aalto University, Puumiehenkuja 2, Espoo, 02150, Finland