1. Graduate Student
Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Champaign, IL 61801 e-mail:
2. Assistant Professor Department of Nuclear, Plasma and Radiological Engineering, University of Illinois at Urbana-Champaign, Champaign, IL 61801 e-mail:
3. Professor Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Champaign, IL 61801 e-mail:
4. Professor Center for Plasma-Material Interactions, Department of Nuclear, Plasma and Radiological Engineering, University of Illinois at Urbana-Champaign, Champaign, IL 61801 e-mail: