1. Department of Mechanical Engineering, University of Connecticut, Storrs 06269, Connecticut, United States
2. Sonny Astani Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, Los Angeles, California 90089, United States
3. Department of Materials, Polymer Physics, ETH Zürich, Zurich CH-8093, Switzerland
4. Department of Mechanical Engineering and Polymer Program, Institute of Materials Science, University of Connecticut, Storrs 06269, Connecticut, United States