1. Materials and Nanotechnology Program, North Dakota State University, Fargo, North Dakota 58108, United States
2. Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
3. Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
4. Department of Chemistry & Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
5. National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
6. Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
7. Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, United States
8. Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, North Dakota 58108, United States