1. Division of Materials Science, Luleå University of Technology, SE 971 87 Luleå, Sweden
2. Fiber and Particle Engineering Research Unit, University of Oulu, FI 90570 Oulu, Finland
3. Empa—Building Energy Materials and Components, Swiss Federal Laboratories for Materials Science and Technology, CH 8600 Dübendorf, Switzerland
4. NMR Research Unit, University of Oulu, FI 90570 Oulu, Finland
5. Mechanical & Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada