1. Department
of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælands vei 4, NO-7491 Trondheim, Norway
2. Department
of Physics, Norwegian University of Science and Technology, Sem Sælands
vei 4, NO-7491 Trondheim, Norway
3. SINTEF
Materials and Chemistry, Norwegian University of Science and Technology, Sem Sælands vei 4, NO-7491 Trondheim, Norway