1. School of Advanced Materials Discovery, Colorado State University, Fort Collins, Colorado 80523-1617, United States
2. School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
3. School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
4. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
5. Department of Mathematics, Colorado State University, Fort Collins, Colorado 80523-1874, United States
6. Department of Design and Merchandising, Colorado State University, Fort Collins, Colorado 80523-1574, United States