1. Department
of Chemical and Biological Engineering, University of Colorado, 3415 Colorado Avenue, JSC Biotech Building, Boulder, Colorado 80309, United States
2. Department
of Polymer Chemistry, Faculty of Chemistry, Maria Curie-Sklodowska University, Gliniana Street 33, 20-614 Lublin, Poland
3. Department
of Physics, University of Colorado, 2000 Colorado Avenue, Boulder, Colorado 80309, United States