1 School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA.
2 Department of Materials Science and Engineering, Iowa State University, Ames, IA 50014, USA; Department of Chemical and Biological Engineering, Iowa State University, Ames, IA 50014, USA.
3 School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA. Electronic address: scott.beckman@wsu.edu.