1. IBM T. J. Watson Research Center, 1101 Kitchawan Road, Yorktown Heights, New York 10598, United States
2. Department
of Mechanical and Aerospace Engineering, and Andlinger Center for
Energy and the Environment, Princeton University, 86 Olden Street, Princeton, New Jersey 08544, United States
3. Department
of Materials Science and Engineering, University of California Los Angeles, 410 Westwood Plaza, Los Angeles, California 90095, United States
4. Department
of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, 220 South 33rd Street, Philadelphia, Pennsylvania 19147, United States