1. NRC Postdoctoral Research Associate, Department of Materials Science & Engineering, North Carolina State University, Raleigh, NC, USA
2. Materials Science Division, Army Research Office, Research Triangle Park, NC, USA
3. Associate Director, Department of Materials Science & Engineering, North Carolina State University, Raleigh, NC, USA
4. Professor, Department of Materials Science & Engineering, North Carolina State University, Raleigh, NC, USA