1. Department
of Mechanical Engineering, Indiana University Purdue University Indianapolis (IUPUI), Indianapolis, Indiana 46202, United States
2. School
of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47097, United States
3. School
of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
4. Department
of Chemical and Biological Engineering, Biorenewable Research Laboratory, Iowa State University, Ames, Iowa 50011, United States
5. Weldon
School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
6. X-ray Science
Division, Argonne National Laboratory, Lemont, Illinois 60439, United States