1. Department
of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
2. The Dutch Polymer Institute (DPI), P.O. Box
902, 5600 AX Eindhoven, The Netherlands
3. Department
of Chemistry and Industrial Chemistry, University of Genova, via Dodecaneso,
31, 16146 Genova, Italy
4. DUBBLE
CRG, Netherlands Organization for Scientific Research (NWO), European Synchrotron Radiation Facility, BP 220, F-38043, Grenoble Cedex, France