1. Center for Nanoscale Science and Engineering, North Dakota State University, Fargo, ND, USA
2. Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND, USA
3. Department of Mechanical Engineering, North Dakota State University, Fargo, ND, USA
4. Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, ND, USA