1. Department of Mechanical and Materials Engineering University of Western Ontario London ON N6A 5B9 Canada
2. Department of Mechanical Engineering University of Michigan−Dearborn Dearborn MI 48128 USA
3. Department of Mechanical and Industrial Engineering The University of Toronto Toronto ON M5S 3G8 Canada
4. Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
5. Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
6. Department of Physics and Astronomy University of Western Ontario London ON N6A 3K7 Canada