1. Department of Materials Science and Engineering; Nanotechnology Research Center (ERNAM); Erciyes University; Kayseri 38039 Turkey
2. The Dow Chemical Company; Collegeville PA 19426 USA
3. Department of Mechanical Science and Engineering; University of Illinois at Urbana-Champaign; Urbana IL 61801 USA
4. Departments of Materials Science and Engineering; Beckman Institute and Frederick Seitz Materials Research Laboratory; University of Illinois at Urbana-Champaign; Urbana IL 61801 USA