1. Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
2. NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
3. Montgomery Blair High School, Silver Spring, Maryland 20901, United States
4. Polymers and Complex Fluids Group, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
5. U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, Madison, Wisconsin 53726, United States
6. Department of Biological Systems Engineering, University of Wisconsin─Madison, Madison, Wisconsin 53706, United States