1. Department of Mechanical Engineering Virginia Tech Blacksburg VA 24060 USA
2. Macromolecules Innovation Institute Virginia Tech Blacksburg VA 24060 USA
3. Materials Technology R&D Vehicle Technologies Office Energy Efficiency and Renewable Energy U.S. Department of Energy Forrestal Building, 1000 Independence Avenue, SW Washington DC 20585 USA
4. University of California, Los Angeles 420 Westwood Plaza Los Angeles CA 90095