1. SNC-Lavalin Inc., Toronto, ON M9C 5K1, Canada e-mail:
2. QuesTek Innovations LLC, Evanston, IL 60201
3. George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332;
4. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332
5. Department of Materials Science and Engineering, Robert R. McCormick School of Engineering and Applied Science, Northwestern University, Evanston, IL 60208;