1. School of Polymer Science and Engineering Center for Optoelectronic Materials and Devices The University of Southern Mississippi Hattiesburg MS 39406 USA
2. Materials and Nanotechnology Program North Dakota State University Fargo ND 58108 USA
3. Department of Civil, Construction, and Environmental Engineering North Dakota State University Fargo ND 58108 USA
4. Department of Chemistry and Biochemistry University of Windsor Windsor Ontario N9B3P4 Canada
5. School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 P. R. China
6. Neutron Scattering Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA
7. Department of Aerospace Engineering Iowa State University Ames IA 50011 USA