1. Department
of Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
2. Laurel School, One Lyman
Circle, Shaker
Heights, Ohio 44122, United States
3. NIST Center for
Neutron Research, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States