1. Department of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, United States
2. Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, North Dakota 58105, United States
3. Center for Optical Materials Science and Engineering Technologies (COMSET), Clemson University, Anderson, South Carolina 29625, United States
4. Department of Bioengineering, Clemson University, Clemson, South Carolina 29634, United States