1. Applied Mechanics
of Materials Laboratory, Department of Mechanical Engineering, Temple University, 1947 North 12th Street, Philadelphia, Pennsylvania 19122, United States
2. Department
of Materials Science and Engineering, University of Pennsylvania, 3231
Walnut Street, Philadelphia, Pennsylvania 19104, United States
3. State Key Laboratory for Modification of
Chemical Fibers and Polymer Materials, Institute of Functional Materials, Donghua University, Shanghai 201620, People’s Republic of China
4. School of Biomedical Engineering,
Science, and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104, United States