1. Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56, SE-100 44 Stockholm, Sweden
2. SciLifeLab, Department of Applied Physics, Experimental Biomolecular Physics, KTH Royal Institute of Technology, Tomtebodavägen 23a, 171 65 Solna, Sweden
3. Applied Physical Chemistry Division, Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, SE-100 44 Stockholm, Sweden